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Finding the Fourth Proportional to 655,891.40, 984,009.90 and 235,123.40

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Solution

The fourth proportional to 655,891.40, 984,009.90 and 235,123.40 is: 352,747.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,891.40 : 984,009.90 = 235,123.40 : x
  2. Step 2: Convert to fraction form
    655,891.40/984,009.90 = 235,123.40/x
  3. Step 3: Cross multiply
    655,891.40x = 984,009.90 × 235,123.40
  4. Step 4: Simplify right side
    655,891.40x = 231,363,753,321.66
  5. Step 5: Solve for x
    x = 231,363,753,321.66/655,891.40
  6. Step 6: Final answer
    x = 352,747.05

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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.