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Finding the Fourth Proportional to 261,505.54, 392,257.59 and 71,951.86

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Solution

The fourth proportional to 261,505.54, 392,257.59 and 71,951.86 is: 107,927.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,505.54 : 392,257.59 = 71,951.86 : x
  2. Step 2: Convert to fraction form
    261,505.54/392,257.59 = 71,951.86/x
  3. Step 3: Cross multiply
    261,505.54x = 392,257.59 × 71,951.86
  4. Step 4: Simplify right side
    261,505.54x = 28,223,663,199.62
  5. Step 5: Solve for x
    x = 28,223,663,199.62/261,505.54
  6. Step 6: Final answer
    x = 107,927.59

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1.5x scale

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.