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Finding the Fourth Proportional to 396,385.88, 546,856.80 and 226,528.88

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Solution

The fourth proportional to 396,385.88, 546,856.80 and 226,528.88 is: 312,520.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,385.88 : 546,856.80 = 226,528.88 : x
  2. Step 2: Convert to fraction form
    396,385.88/546,856.80 = 226,528.88/x
  3. Step 3: Cross multiply
    396,385.88x = 546,856.80 × 226,528.88
  4. Step 4: Simplify right side
    396,385.88x = 123,878,858,424.38
  5. Step 5: Solve for x
    x = 123,878,858,424.38/396,385.88
  6. Step 6: Final answer
    x = 312,520.87

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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.