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Finding the Fourth Proportional to 316,778.52, 475,130.88 and 127,231.23

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Solution

The fourth proportional to 316,778.52, 475,130.88 and 127,231.23 is: 190,832.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,778.52 : 475,130.88 = 127,231.23 : x
  2. Step 2: Convert to fraction form
    316,778.52/475,130.88 = 127,231.23/x
  3. Step 3: Cross multiply
    316,778.52x = 475,130.88 × 127,231.23
  4. Step 4: Simplify right side
    316,778.52x = 60,451,486,182.06
  5. Step 5: Solve for x
    x = 60,451,486,182.06/316,778.52
  6. Step 6: Final answer
    x = 190,832.02

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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.