Home / 396,439.31-547,086.53-215,151.20

Finding the Fourth Proportional to 396,439.31, 547,086.53 and 215,151.20

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Solution

The fourth proportional to 396,439.31, 547,086.53 and 215,151.20 is: 296,908.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,439.31 : 547,086.53 = 215,151.20 : x
  2. Step 2: Convert to fraction form
    396,439.31/547,086.53 = 215,151.20/x
  3. Step 3: Cross multiply
    396,439.31x = 547,086.53 × 215,151.20
  4. Step 4: Simplify right side
    396,439.31x = 117,706,323,287.36
  5. Step 5: Solve for x
    x = 117,706,323,287.36/396,439.31
  6. Step 6: Final answer
    x = 296,908.81

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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.