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Finding the Fourth Proportional to 257,869,690,435.15, 386,804,535,652.72 and 257,869,690,435.15

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Solution

The fourth proportional to 257,869,690,435.15, 386,804,535,652.72 and 257,869,690,435.15 is: 386,804,535,652.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,869,690,435.15 : 386,804,535,652.72 = 257,869,690,435.15 : x
  2. Step 2: Convert to fraction form
    257,869,690,435.15/386,804,535,652.72 = 257,869,690,435.15/x
  3. Step 3: Cross multiply
    257,869,690,435.15x = 386,804,535,652.72 × 257,869,690,435.15
  4. Step 4: Simplify right side
    257,869,690,435.15x = 99,745,165,867,678,842,224,640
  5. Step 5: Solve for x
    x = 99,745,165,867,678,842,224,640/257,869,690,435.15
  6. Step 6: Final answer
    x = 386,804,535,652.72

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.