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Finding the Fourth Proportional to 237,421.72, 327,641.28 and 129,990.88

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Solution

The fourth proportional to 237,421.72, 327,641.28 and 129,990.88 is: 179,387.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,421.72 : 327,641.28 = 129,990.88 : x
  2. Step 2: Convert to fraction form
    237,421.72/327,641.28 = 129,990.88/x
  3. Step 3: Cross multiply
    237,421.72x = 327,641.28 × 129,990.88
  4. Step 4: Simplify right side
    237,421.72x = 42,590,378,311.53
  5. Step 5: Solve for x
    x = 42,590,378,311.53/237,421.72
  6. Step 6: Final answer
    x = 179,387.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.