Home / 396,720.42-547,472.18-215,430.74

Finding the Fourth Proportional to 396,720.42, 547,472.18 and 215,430.74

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Solution

The fourth proportional to 396,720.42, 547,472.18 and 215,430.74 is: 297,293.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,720.42 : 547,472.18 = 215,430.74 : x
  2. Step 2: Convert to fraction form
    396,720.42/547,472.18 = 215,430.74/x
  3. Step 3: Cross multiply
    396,720.42x = 547,472.18 × 215,430.74
  4. Step 4: Simplify right side
    396,720.42x = 117,942,336,866.81
  5. Step 5: Solve for x
    x = 117,942,336,866.81/396,720.42
  6. Step 6: Final answer
    x = 297,293.34

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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.