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Finding the Fourth Proportional to 261,781.88, 392,672.81 and 84,306.83

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Solution

The fourth proportional to 261,781.88, 392,672.81 and 84,306.83 is: 126,460.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,781.88 : 392,672.81 = 84,306.83 : x
  2. Step 2: Convert to fraction form
    261,781.88/392,672.81 = 84,306.83/x
  3. Step 3: Cross multiply
    261,781.88x = 392,672.81 × 84,306.83
  4. Step 4: Simplify right side
    261,781.88x = 33,104,998,085.70
  5. Step 5: Solve for x
    x = 33,104,998,085.70/261,781.88
  6. Step 6: Final answer
    x = 126,460.24

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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.