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Finding the Fourth Proportional to 396,323.49, 547,023.69 and 243,398.13

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Solution

The fourth proportional to 396,323.49, 547,023.69 and 243,398.13 is: 335,949.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,323.49 : 547,023.69 = 243,398.13 : x
  2. Step 2: Convert to fraction form
    396,323.49/547,023.69 = 243,398.13/x
  3. Step 3: Cross multiply
    396,323.49x = 547,023.69 × 243,398.13
  4. Step 4: Simplify right side
    396,323.49x = 133,144,543,211.70
  5. Step 5: Solve for x
    x = 133,144,543,211.70/396,323.49
  6. Step 6: Final answer
    x = 335,949.16

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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.