Home / 396,981.36-547,836.51-215,694.76

Finding the Fourth Proportional to 396,981.36, 547,836.51 and 215,694.76

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Solution

The fourth proportional to 396,981.36, 547,836.51 and 215,694.76 is: 297,659.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,981.36 : 547,836.51 = 215,694.76 : x
  2. Step 2: Convert to fraction form
    396,981.36/547,836.51 = 215,694.76/x
  3. Step 3: Cross multiply
    396,981.36x = 547,836.51 × 215,694.76
  4. Step 4: Simplify right side
    396,981.36x = 118,165,464,543.69
  5. Step 5: Solve for x
    x = 118,165,464,543.69/396,981.36
  6. Step 6: Final answer
    x = 297,659.98

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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.