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Finding the Fourth Proportional to 251,472.18, 377,286.19 and 87,168.64

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Solution

The fourth proportional to 251,472.18, 377,286.19 and 87,168.64 is: 130,779.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,472.18 : 377,286.19 = 87,168.64 : x
  2. Step 2: Convert to fraction form
    251,472.18/377,286.19 = 87,168.64/x
  3. Step 3: Cross multiply
    251,472.18x = 377,286.19 × 87,168.64
  4. Step 4: Simplify right side
    251,472.18x = 32,887,524,073.08
  5. Step 5: Solve for x
    x = 32,887,524,073.08/251,472.18
  6. Step 6: Final answer
    x = 130,779.97

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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.