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Finding the Fourth Proportional to 438,792.31, 658,212.90 and 123,224.50

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Solution

The fourth proportional to 438,792.31, 658,212.90 and 123,224.50 is: 184,843.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,792.31 : 658,212.90 = 123,224.50 : x
  2. Step 2: Convert to fraction form
    438,792.31/658,212.90 = 123,224.50/x
  3. Step 3: Cross multiply
    438,792.31x = 658,212.90 × 123,224.50
  4. Step 4: Simplify right side
    438,792.31x = 81,107,955,496.05
  5. Step 5: Solve for x
    x = 81,107,955,496.05/438,792.31
  6. Step 6: Final answer
    x = 184,843.61

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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.