Home / 396,436.15-547,082.27-215,148.12

Finding the Fourth Proportional to 396,436.15, 547,082.27 and 215,148.12

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Solution

The fourth proportional to 396,436.15, 547,082.27 and 215,148.12 is: 296,904.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,436.15 : 547,082.27 = 215,148.12 : x
  2. Step 2: Convert to fraction form
    396,436.15/547,082.27 = 215,148.12/x
  3. Step 3: Cross multiply
    396,436.15x = 547,082.27 × 215,148.12
  4. Step 4: Simplify right side
    396,436.15x = 117,703,721,875.83
  5. Step 5: Solve for x
    x = 117,703,721,875.83/396,436.15
  6. Step 6: Final answer
    x = 296,904.61

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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.