Home / 418,306.25-627,557.79-137,823.50

Finding the Fourth Proportional to 418,306.25, 627,557.79 and 137,823.50

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Solution

The fourth proportional to 418,306.25, 627,557.79 and 137,823.50 is: 206,767.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,306.25 : 627,557.79 = 137,823.50 : x
  2. Step 2: Convert to fraction form
    418,306.25/627,557.79 = 137,823.50/x
  3. Step 3: Cross multiply
    418,306.25x = 627,557.79 × 137,823.50
  4. Step 4: Simplify right side
    418,306.25x = 86,492,211,070.07
  5. Step 5: Solve for x
    x = 86,492,211,070.07/418,306.25
  6. Step 6: Final answer
    x = 206,767.68

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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.