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Finding the Fourth Proportional to 438,755.81, 658,133.72 and 106,331.81

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Solution

The fourth proportional to 438,755.81, 658,133.72 and 106,331.81 is: 159,497.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,755.81 : 658,133.72 = 106,331.81 : x
  2. Step 2: Convert to fraction form
    438,755.81/658,133.72 = 106,331.81/x
  3. Step 3: Cross multiply
    438,755.81x = 658,133.72 × 106,331.81
  4. Step 4: Simplify right side
    438,755.81x = 69,980,551,580.80
  5. Step 5: Solve for x
    x = 69,980,551,580.80/438,755.81
  6. Step 6: Final answer
    x = 159,497.72

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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.