Home / 396,721.08-547,471.98-215,429.58

Finding the Fourth Proportional to 396,721.08, 547,471.98 and 215,429.58

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Solution

The fourth proportional to 396,721.08, 547,471.98 and 215,429.58 is: 297,291.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,721.08 : 547,471.98 = 215,429.58 : x
  2. Step 2: Convert to fraction form
    396,721.08/547,471.98 = 215,429.58/x
  3. Step 3: Cross multiply
    396,721.08x = 547,471.98 × 215,429.58
  4. Step 4: Simplify right side
    396,721.08x = 117,941,658,713.17
  5. Step 5: Solve for x
    x = 117,941,658,713.17/396,721.08
  6. Step 6: Final answer
    x = 297,291.13

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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.