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Finding the Fourth Proportional to 261,773.80, 393,243.90 and 251,146.60

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Solution

The fourth proportional to 261,773.80, 393,243.90 and 251,146.60 is: 377,279.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,773.80 : 393,243.90 = 251,146.60 : x
  2. Step 2: Convert to fraction form
    261,773.80/393,243.90 = 251,146.60/x
  3. Step 3: Cross multiply
    261,773.80x = 393,243.90 × 251,146.60
  4. Step 4: Simplify right side
    261,773.80x = 98,761,868,455.74
  5. Step 5: Solve for x
    x = 98,761,868,455.74/261,773.80
  6. Step 6: Final answer
    x = 377,279.42

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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.