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Finding the Fourth Proportional to 251,471.18, 377,284.69 and 87,167.64

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Solution

The fourth proportional to 251,471.18, 377,284.69 and 87,167.64 is: 130,778.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,471.18 : 377,284.69 = 87,167.64 : x
  2. Step 2: Convert to fraction form
    251,471.18/377,284.69 = 87,167.64/x
  3. Step 3: Cross multiply
    251,471.18x = 377,284.69 × 87,167.64
  4. Step 4: Simplify right side
    251,471.18x = 32,887,017,068.89
  5. Step 5: Solve for x
    x = 32,887,017,068.89/251,471.18
  6. Step 6: Final answer
    x = 130,778.47

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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.