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Finding the Fourth Proportional to 317,761.88, 476,642.39 and 81,104.58

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Solution

The fourth proportional to 317,761.88, 476,642.39 and 81,104.58 is: 121,656.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,761.88 : 476,642.39 = 81,104.58 : x
  2. Step 2: Convert to fraction form
    317,761.88/476,642.39 = 81,104.58/x
  3. Step 3: Cross multiply
    317,761.88x = 476,642.39 × 81,104.58
  4. Step 4: Simplify right side
    317,761.88x = 38,657,880,445.62
  5. Step 5: Solve for x
    x = 38,657,880,445.62/317,761.88
  6. Step 6: Final answer
    x = 121,656.76

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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.