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Finding the Fourth Proportional to 396,384.64, 547,012.28 and 215,096.61

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Solution

The fourth proportional to 396,384.64, 547,012.28 and 215,096.61 is: 296,834.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,384.64 : 547,012.28 = 215,096.61 : x
  2. Step 2: Convert to fraction form
    396,384.64/547,012.28 = 215,096.61/x
  3. Step 3: Cross multiply
    396,384.64x = 547,012.28 × 215,096.61
  4. Step 4: Simplify right side
    396,384.64x = 117,660,485,980.89
  5. Step 5: Solve for x
    x = 117,660,485,980.89/396,384.64
  6. Step 6: Final answer
    x = 296,834.12

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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.