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Finding the Fourth Proportional to 438,757.60, 658,136.40 and 123,224.80

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Solution

The fourth proportional to 438,757.60, 658,136.40 and 123,224.80 is: 184,837.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,757.60 : 658,136.40 = 123,224.80 : x
  2. Step 2: Convert to fraction form
    438,757.60/658,136.40 = 123,224.80/x
  3. Step 3: Cross multiply
    438,757.60x = 658,136.40 × 123,224.80
  4. Step 4: Simplify right side
    438,757.60x = 81,098,726,262.72
  5. Step 5: Solve for x
    x = 81,098,726,262.72/438,757.60
  6. Step 6: Final answer
    x = 184,837.20

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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.