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Finding the Fourth Proportional to 342,781.68, 513,502.92 and 236,146.80

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Solution

The fourth proportional to 342,781.68, 513,502.92 and 236,146.80 is: 353,758.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,781.68 : 513,502.92 = 236,146.80 : x
  2. Step 2: Convert to fraction form
    342,781.68/513,502.92 = 236,146.80/x
  3. Step 3: Cross multiply
    342,781.68x = 513,502.92 × 236,146.80
  4. Step 4: Simplify right side
    342,781.68x = 121,262,071,348.66
  5. Step 5: Solve for x
    x = 121,262,071,348.66/342,781.68
  6. Step 6: Final answer
    x = 353,758.90

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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.