Home / 396,426.15-547,068.47-215,138.12

Finding the Fourth Proportional to 396,426.15, 547,068.47 and 215,138.12

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Solution

The fourth proportional to 396,426.15, 547,068.47 and 215,138.12 is: 296,890.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,426.15 : 547,068.47 = 215,138.12 : x
  2. Step 2: Convert to fraction form
    396,426.15/547,068.47 = 215,138.12/x
  3. Step 3: Cross multiply
    396,426.15x = 547,068.47 × 215,138.12
  4. Step 4: Simplify right side
    396,426.15x = 117,695,278,336.04
  5. Step 5: Solve for x
    x = 117,695,278,336.04/396,426.15
  6. Step 6: Final answer
    x = 296,890.80

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1.5x scale

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.