Home / 396,501.45-547,157.33-215,209.53

Finding the Fourth Proportional to 396,501.45, 547,157.33 and 215,209.53

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Solution

The fourth proportional to 396,501.45, 547,157.33 and 215,209.53 is: 296,981.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,501.45 : 547,157.33 = 215,209.53 : x
  2. Step 2: Convert to fraction form
    396,501.45/547,157.33 = 215,209.53/x
  3. Step 3: Cross multiply
    396,501.45x = 547,157.33 × 215,209.53
  4. Step 4: Simplify right side
    396,501.45x = 117,753,471,825.36
  5. Step 5: Solve for x
    x = 117,753,471,825.36/396,501.45
  6. Step 6: Final answer
    x = 296,981.19

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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.