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Finding the Fourth Proportional to 311,331.28, 429,663.64 and 175,391.92

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Solution

The fourth proportional to 311,331.28, 429,663.64 and 175,391.92 is: 242,055.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,331.28 : 429,663.64 = 175,391.92 : x
  2. Step 2: Convert to fraction form
    311,331.28/429,663.64 = 175,391.92/x
  3. Step 3: Cross multiply
    311,331.28x = 429,663.64 × 175,391.92
  4. Step 4: Simplify right side
    311,331.28x = 75,359,530,773.79
  5. Step 5: Solve for x
    x = 75,359,530,773.79/311,331.28
  6. Step 6: Final answer
    x = 242,055.76

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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.