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Finding the Fourth Proportional to 438,470.60, 657,487.20 and 201,545.60

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Solution

The fourth proportional to 438,470.60, 657,487.20 and 201,545.60 is: 302,217.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,470.60 : 657,487.20 = 201,545.60 : x
  2. Step 2: Convert to fraction form
    438,470.60/657,487.20 = 201,545.60/x
  3. Step 3: Cross multiply
    438,470.60x = 657,487.20 × 201,545.60
  4. Step 4: Simplify right side
    438,470.60x = 132,513,652,216.32
  5. Step 5: Solve for x
    x = 132,513,652,216.32/438,470.60
  6. Step 6: Final answer
    x = 302,217.87

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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.