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Finding the Fourth Proportional to 311,179.50, 429,402.20 and 175,169.97

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Solution

The fourth proportional to 311,179.50, 429,402.20 and 175,169.97 is: 241,720.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,179.50 : 429,402.20 = 175,169.97 : x
  2. Step 2: Convert to fraction form
    311,179.50/429,402.20 = 175,169.97/x
  3. Step 3: Cross multiply
    311,179.50x = 429,402.20 × 175,169.97
  4. Step 4: Simplify right side
    311,179.50x = 75,218,369,616.08
  5. Step 5: Solve for x
    x = 75,218,369,616.08/311,179.50
  6. Step 6: Final answer
    x = 241,720.20

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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.