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Finding the Fourth Proportional to 261,397.42, 392,098.56 and 74,408.92

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Solution

The fourth proportional to 261,397.42, 392,098.56 and 74,408.92 is: 111,614.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,397.42 : 392,098.56 = 74,408.92 : x
  2. Step 2: Convert to fraction form
    261,397.42/392,098.56 = 74,408.92/x
  3. Step 3: Cross multiply
    261,397.42x = 392,098.56 × 74,408.92
  4. Step 4: Simplify right side
    261,397.42x = 29,175,630,383.16
  5. Step 5: Solve for x
    x = 29,175,630,383.16/261,397.42
  6. Step 6: Final answer
    x = 111,614.07

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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.