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Finding the Fourth Proportional to 261,370.79, 392,060.48 and 71,829.97

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Solution

The fourth proportional to 261,370.79, 392,060.48 and 71,829.97 is: 107,746.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,370.79 : 392,060.48 = 71,829.97 : x
  2. Step 2: Convert to fraction form
    261,370.79/392,060.48 = 71,829.97/x
  3. Step 3: Cross multiply
    261,370.79x = 392,060.48 × 71,829.97
  4. Step 4: Simplify right side
    261,370.79x = 28,161,692,516.59
  5. Step 5: Solve for x
    x = 28,161,692,516.59/261,370.79
  6. Step 6: Final answer
    x = 107,746.14

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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.