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Finding the Fourth Proportional to 442,729.28, 610,963.56 and 251,742.66

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Solution

The fourth proportional to 442,729.28, 610,963.56 and 251,742.66 is: 347,403.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,729.28 : 610,963.56 = 251,742.66 : x
  2. Step 2: Convert to fraction form
    442,729.28/610,963.56 = 251,742.66/x
  3. Step 3: Cross multiply
    442,729.28x = 610,963.56 × 251,742.66
  4. Step 4: Simplify right side
    442,729.28x = 153,805,591,757.47
  5. Step 5: Solve for x
    x = 153,805,591,757.47/442,729.28
  6. Step 6: Final answer
    x = 347,403.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.