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Finding the Fourth Proportional to 417,891.60, 626,604.12 and 137,385.36

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Solution

The fourth proportional to 417,891.60, 626,604.12 and 137,385.36 is: 206,001.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,891.60 : 626,604.12 = 137,385.36 : x
  2. Step 2: Convert to fraction form
    417,891.60/626,604.12 = 137,385.36/x
  3. Step 3: Cross multiply
    417,891.60x = 626,604.12 × 137,385.36
  4. Step 4: Simplify right side
    417,891.60x = 86,086,232,603.68
  5. Step 5: Solve for x
    x = 86,086,232,603.68/417,891.60
  6. Step 6: Final answer
    x = 206,001.35

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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.