Home / 442,914.30-664,371.45-206,280.90

Finding the Fourth Proportional to 442,914.30, 664,371.45 and 206,280.90

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Solution

The fourth proportional to 442,914.30, 664,371.45 and 206,280.90 is: 309,421.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,914.30 : 664,371.45 = 206,280.90 : x
  2. Step 2: Convert to fraction form
    442,914.30/664,371.45 = 206,280.90/x
  3. Step 3: Cross multiply
    442,914.30x = 664,371.45 × 206,280.90
  4. Step 4: Simplify right side
    442,914.30x = 137,047,140,640.31
  5. Step 5: Solve for x
    x = 137,047,140,640.31/442,914.30
  6. Step 6: Final answer
    x = 309,421.35

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Double scale
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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.