Home / 418,311.26-627,565.30-137,828.50

Finding the Fourth Proportional to 418,311.26, 627,565.30 and 137,828.50

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Solution

The fourth proportional to 418,311.26, 627,565.30 and 137,828.50 is: 206,775.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,311.26 : 627,565.30 = 137,828.50 : x
  2. Step 2: Convert to fraction form
    418,311.26/627,565.30 = 137,828.50/x
  3. Step 3: Cross multiply
    418,311.26x = 627,565.30 × 137,828.50
  4. Step 4: Simplify right side
    418,311.26x = 86,496,383,951.05
  5. Step 5: Solve for x
    x = 86,496,383,951.05/418,311.26
  6. Step 6: Final answer
    x = 206,775.17

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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.