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Finding the Fourth Proportional to 418,729.91, 627,726.11 and 166,187.70

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Solution

The fourth proportional to 418,729.91, 627,726.11 and 166,187.70 is: 249,135.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,729.91 : 627,726.11 = 166,187.70 : x
  2. Step 2: Convert to fraction form
    418,729.91/627,726.11 = 166,187.70/x
  3. Step 3: Cross multiply
    418,729.91x = 627,726.11 × 166,187.70
  4. Step 4: Simplify right side
    418,729.91x = 104,320,357,619.91
  5. Step 5: Solve for x
    x = 104,320,357,619.91/418,729.91
  6. Step 6: Final answer
    x = 249,135.20

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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.