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Finding the Fourth Proportional to 261,331.20, 392,052.48 and 149,064.96

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Solution

The fourth proportional to 261,331.20, 392,052.48 and 149,064.96 is: 223,629.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,331.20 : 392,052.48 = 149,064.96 : x
  2. Step 2: Convert to fraction form
    261,331.20/392,052.48 = 149,064.96/x
  3. Step 3: Cross multiply
    261,331.20x = 392,052.48 × 149,064.96
  4. Step 4: Simplify right side
    261,331.20x = 58,441,287,249.10
  5. Step 5: Solve for x
    x = 58,441,287,249.10/261,331.20
  6. Step 6: Final answer
    x = 223,629.20

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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.