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Finding the Fourth Proportional to 491,387.38, 737,261.34 and 207,149.50

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Solution

The fourth proportional to 491,387.38, 737,261.34 and 207,149.50 is: 310,800.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,387.38 : 737,261.34 = 207,149.50 : x
  2. Step 2: Convert to fraction form
    491,387.38/737,261.34 = 207,149.50/x
  3. Step 3: Cross multiply
    491,387.38x = 737,261.34 × 207,149.50
  4. Step 4: Simplify right side
    491,387.38x = 152,723,317,950.33
  5. Step 5: Solve for x
    x = 152,723,317,950.33/491,387.38
  6. Step 6: Final answer
    x = 310,800.24

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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.