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Finding the Fourth Proportional to 311,027.28, 429,218.28 and 176,891.28

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Solution

The fourth proportional to 311,027.28, 429,218.28 and 176,891.28 is: 244,110.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,027.28 : 429,218.28 = 176,891.28 : x
  2. Step 2: Convert to fraction form
    311,027.28/429,218.28 = 176,891.28/x
  3. Step 3: Cross multiply
    311,027.28x = 429,218.28 × 176,891.28
  4. Step 4: Simplify right side
    311,027.28x = 75,924,970,948.60
  5. Step 5: Solve for x
    x = 75,924,970,948.60/311,027.28
  6. Step 6: Final answer
    x = 244,110.33

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1.5x scale

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.