Home / 396,470.31-547,129.55-215,182.23

Finding the Fourth Proportional to 396,470.31, 547,129.55 and 215,182.23

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Solution

The fourth proportional to 396,470.31, 547,129.55 and 215,182.23 is: 296,951.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,470.31 : 547,129.55 = 215,182.23 : x
  2. Step 2: Convert to fraction form
    396,470.31/547,129.55 = 215,182.23/x
  3. Step 3: Cross multiply
    396,470.31x = 547,129.55 × 215,182.23
  4. Step 4: Simplify right side
    396,470.31x = 117,732,556,667.90
  5. Step 5: Solve for x
    x = 117,732,556,667.90/396,470.31
  6. Step 6: Final answer
    x = 296,951.76

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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.