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Finding the Fourth Proportional to 618,144.31, 927,110.15 and 185,855.21

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Solution

The fourth proportional to 618,144.31, 927,110.15 and 185,855.21 is: 278,750.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,144.31 : 927,110.15 = 185,855.21 : x
  2. Step 2: Convert to fraction form
    618,144.31/927,110.15 = 185,855.21/x
  3. Step 3: Cross multiply
    618,144.31x = 927,110.15 × 185,855.21
  4. Step 4: Simplify right side
    618,144.31x = 172,308,251,275.61
  5. Step 5: Solve for x
    x = 172,308,251,275.61/618,144.31
  6. Step 6: Final answer
    x = 278,750.85

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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.