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Finding the Fourth Proportional to 311,338.14, 429,489.72 and 182,191.74

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Solution

The fourth proportional to 311,338.14, 429,489.72 and 182,191.74 is: 251,332.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,338.14 : 429,489.72 = 182,191.74 : x
  2. Step 2: Convert to fraction form
    311,338.14/429,489.72 = 182,191.74/x
  3. Step 3: Cross multiply
    311,338.14x = 429,489.72 × 182,191.74
  4. Step 4: Simplify right side
    311,338.14x = 78,249,479,398.91
  5. Step 5: Solve for x
    x = 78,249,479,398.91/311,338.14
  6. Step 6: Final answer
    x = 251,332.78

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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.