Home / 418,304.25-627,554.79-137,821.50

Finding the Fourth Proportional to 418,304.25, 627,554.79 and 137,821.50

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Solution

The fourth proportional to 418,304.25, 627,554.79 and 137,821.50 is: 206,764.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,304.25 : 627,554.79 = 137,821.50 : x
  2. Step 2: Convert to fraction form
    418,304.25/627,554.79 = 137,821.50/x
  3. Step 3: Cross multiply
    418,304.25x = 627,554.79 × 137,821.50
  4. Step 4: Simplify right side
    418,304.25x = 86,490,542,489.99
  5. Step 5: Solve for x
    x = 86,490,542,489.99/418,304.25
  6. Step 6: Final answer
    x = 206,764.68

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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.