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Finding the Fourth Proportional to 396,903.47, 547,730.57 and 215,616.76

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Solution

The fourth proportional to 396,903.47, 547,730.57 and 215,616.76 is: 297,553.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,903.47 : 547,730.57 = 215,616.76 : x
  2. Step 2: Convert to fraction form
    396,903.47/547,730.57 = 215,616.76/x
  3. Step 3: Cross multiply
    396,903.47x = 547,730.57 × 215,616.76
  4. Step 4: Simplify right side
    396,903.47x = 118,099,890,026.07
  5. Step 5: Solve for x
    x = 118,099,890,026.07/396,903.47
  6. Step 6: Final answer
    x = 297,553.18

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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.