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Finding the Fourth Proportional to 396,139.68, 546,495.84 and 235,001.52

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Solution

The fourth proportional to 396,139.68, 546,495.84 and 235,001.52 is: 324,197.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,139.68 : 546,495.84 = 235,001.52 : x
  2. Step 2: Convert to fraction form
    396,139.68/546,495.84 = 235,001.52/x
  3. Step 3: Cross multiply
    396,139.68x = 546,495.84 × 235,001.52
  4. Step 4: Simplify right side
    396,139.68x = 128,427,353,073.68
  5. Step 5: Solve for x
    x = 128,427,353,073.68/396,139.68
  6. Step 6: Final answer
    x = 324,197.14

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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.