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Finding the Fourth Proportional to 396,650.64, 547,175.08 and 253,259.92

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Solution

The fourth proportional to 396,650.64, 547,175.08 and 253,259.92 is: 349,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,650.64 : 547,175.08 = 253,259.92 : x
  2. Step 2: Convert to fraction form
    396,650.64/547,175.08 = 253,259.92/x
  3. Step 3: Cross multiply
    396,650.64x = 547,175.08 × 253,259.92
  4. Step 4: Simplify right side
    396,650.64x = 138,577,516,986.79
  5. Step 5: Solve for x
    x = 138,577,516,986.79/396,650.64
  6. Step 6: Final answer
    x = 349,369.20

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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.