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Finding the Fourth Proportional to 311,366.70, 429,726.87 and 175,426.88

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Solution

The fourth proportional to 311,366.70, 429,726.87 and 175,426.88 is: 242,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,366.70 : 429,726.87 = 175,426.88 : x
  2. Step 2: Convert to fraction form
    311,366.70/429,726.87 = 175,426.88/x
  3. Step 3: Cross multiply
    311,366.70x = 429,726.87 × 175,426.88
  4. Step 4: Simplify right side
    311,366.70x = 75,385,644,324.84
  5. Step 5: Solve for x
    x = 75,385,644,324.84/311,366.70
  6. Step 6: Final answer
    x = 242,112.10

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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.