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Finding the Fourth Proportional to 253,359.24, 379,931.94 and 75,891.48

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Solution

The fourth proportional to 253,359.24, 379,931.94 and 75,891.48 is: 113,805.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,359.24 : 379,931.94 = 75,891.48 : x
  2. Step 2: Convert to fraction form
    253,359.24/379,931.94 = 75,891.48/x
  3. Step 3: Cross multiply
    253,359.24x = 379,931.94 × 75,891.48
  4. Step 4: Simplify right side
    253,359.24x = 28,833,597,225.87
  5. Step 5: Solve for x
    x = 28,833,597,225.87/253,359.24
  6. Step 6: Final answer
    x = 113,805.19

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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.