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Finding the Fourth Proportional to 519,345.10, 779,017.65 and 164,386.90

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Solution

The fourth proportional to 519,345.10, 779,017.65 and 164,386.90 is: 246,580.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,345.10 : 779,017.65 = 164,386.90 : x
  2. Step 2: Convert to fraction form
    519,345.10/779,017.65 = 164,386.90/x
  3. Step 3: Cross multiply
    519,345.10x = 779,017.65 × 164,386.90
  4. Step 4: Simplify right side
    519,345.10x = 128,060,296,528.79
  5. Step 5: Solve for x
    x = 128,060,296,528.79/519,345.10
  6. Step 6: Final answer
    x = 246,580.35

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Similar ratio
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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.