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Finding the Fourth Proportional to 317,167.64, 475,987.98 and 127,629.69

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Solution

The fourth proportional to 317,167.64, 475,987.98 and 127,629.69 is: 191,539.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,167.64 : 475,987.98 = 127,629.69 : x
  2. Step 2: Convert to fraction form
    317,167.64/475,987.98 = 127,629.69/x
  3. Step 3: Cross multiply
    317,167.64x = 475,987.98 × 127,629.69
  4. Step 4: Simplify right side
    317,167.64x = 60,750,198,331.13
  5. Step 5: Solve for x
    x = 60,750,198,331.13/317,167.64
  6. Step 6: Final answer
    x = 191,539.71

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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.