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Finding the Fourth Proportional to 253,126.40, 379,747.20 and 147,891.20

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Solution

The fourth proportional to 253,126.40, 379,747.20 and 147,891.20 is: 221,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,126.40 : 379,747.20 = 147,891.20 : x
  2. Step 2: Convert to fraction form
    253,126.40/379,747.20 = 147,891.20/x
  3. Step 3: Cross multiply
    253,126.40x = 379,747.20 × 147,891.20
  4. Step 4: Simplify right side
    253,126.40x = 56,161,269,104.64
  5. Step 5: Solve for x
    x = 56,161,269,104.64/253,126.40
  6. Step 6: Final answer
    x = 221,870.45

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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.