Home / 396,421.22-547,065.29-215,134.71

Finding the Fourth Proportional to 396,421.22, 547,065.29 and 215,134.71

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Solution

The fourth proportional to 396,421.22, 547,065.29 and 215,134.71 is: 296,888.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,421.22 : 547,065.29 = 215,134.71 : x
  2. Step 2: Convert to fraction form
    396,421.22/547,065.29 = 215,134.71/x
  3. Step 3: Cross multiply
    396,421.22x = 547,065.29 × 215,134.71
  4. Step 4: Simplify right side
    396,421.22x = 117,692,731,439.54
  5. Step 5: Solve for x
    x = 117,692,731,439.54/396,421.22
  6. Step 6: Final answer
    x = 296,888.08

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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.