Home / 396,905.40-547,727.27-215,615.86

Finding the Fourth Proportional to 396,905.40, 547,727.27 and 215,615.86

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Solution

The fourth proportional to 396,905.40, 547,727.27 and 215,615.86 is: 297,548.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,905.40 : 547,727.27 = 215,615.86 : x
  2. Step 2: Convert to fraction form
    396,905.40/547,727.27 = 215,615.86/x
  3. Step 3: Cross multiply
    396,905.40x = 547,727.27 × 215,615.86
  4. Step 4: Simplify right side
    396,905.40x = 118,098,683,919.11
  5. Step 5: Solve for x
    x = 118,098,683,919.11/396,905.40
  6. Step 6: Final answer
    x = 297,548.70

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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.