Home / 396,421.28-547,061.74-215,133.24

Finding the Fourth Proportional to 396,421.28, 547,061.74 and 215,133.24

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Solution

The fourth proportional to 396,421.28, 547,061.74 and 215,133.24 is: 296,884.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,421.28 : 547,061.74 = 215,133.24 : x
  2. Step 2: Convert to fraction form
    396,421.28/547,061.74 = 215,133.24/x
  3. Step 3: Cross multiply
    396,421.28x = 547,061.74 × 215,133.24
  4. Step 4: Simplify right side
    396,421.28x = 117,691,164,068.41
  5. Step 5: Solve for x
    x = 117,691,164,068.41/396,421.28
  6. Step 6: Final answer
    x = 296,884.08

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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.