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Finding the Fourth Proportional to 253,138.87, 379,848.39 and 151,687.69

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Solution

The fourth proportional to 253,138.87, 379,848.39 and 151,687.69 is: 227,615.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,138.87 : 379,848.39 = 151,687.69 : x
  2. Step 2: Convert to fraction form
    253,138.87/379,848.39 = 151,687.69/x
  3. Step 3: Cross multiply
    253,138.87x = 379,848.39 × 151,687.69
  4. Step 4: Simplify right side
    253,138.87x = 57,618,323,310.87
  5. Step 5: Solve for x
    x = 57,618,323,310.87/253,138.87
  6. Step 6: Final answer
    x = 227,615.47

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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.