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Finding the Fourth Proportional to 436,781.46, 655,175.79 and 137,255.34

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Solution

The fourth proportional to 436,781.46, 655,175.79 and 137,255.34 is: 205,884.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,781.46 : 655,175.79 = 137,255.34 : x
  2. Step 2: Convert to fraction form
    436,781.46/655,175.79 = 137,255.34/x
  3. Step 3: Cross multiply
    436,781.46x = 655,175.79 × 137,255.34
  4. Step 4: Simplify right side
    436,781.46x = 89,926,375,816.22
  5. Step 5: Solve for x
    x = 89,926,375,816.22/436,781.46
  6. Step 6: Final answer
    x = 205,884.14

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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.