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Finding the Fourth Proportional to 457,991.48, 687,049.59 and 158,391.65

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Solution

The fourth proportional to 457,991.48, 687,049.59 and 158,391.65 is: 237,609.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,991.48 : 687,049.59 = 158,391.65 : x
  2. Step 2: Convert to fraction form
    457,991.48/687,049.59 = 158,391.65/x
  3. Step 3: Cross multiply
    457,991.48x = 687,049.59 × 158,391.65
  4. Step 4: Simplify right side
    457,991.48x = 108,822,918,191.92
  5. Step 5: Solve for x
    x = 108,822,918,191.92/457,991.48
  6. Step 6: Final answer
    x = 237,609.05

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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.