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Finding the Fourth Proportional to 436,910.40, 655,388.95 and 137,414.33

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Solution

The fourth proportional to 436,910.40, 655,388.95 and 137,414.33 is: 206,128.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,910.40 : 655,388.95 = 137,414.33 : x
  2. Step 2: Convert to fraction form
    436,910.40/655,388.95 = 137,414.33/x
  3. Step 3: Cross multiply
    436,910.40x = 655,388.95 × 137,414.33
  4. Step 4: Simplify right side
    436,910.40x = 90,059,834,035.04
  5. Step 5: Solve for x
    x = 90,059,834,035.04/436,910.40
  6. Step 6: Final answer
    x = 206,128.84

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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.