Home / 396,443.32-547,092.07-215,155.21

Finding the Fourth Proportional to 396,443.32, 547,092.07 and 215,155.21

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Solution

The fourth proportional to 396,443.32, 547,092.07 and 215,155.21 is: 296,914.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,443.32 : 547,092.07 = 215,155.21 : x
  2. Step 2: Convert to fraction form
    396,443.32/547,092.07 = 215,155.21/x
  3. Step 3: Cross multiply
    396,443.32x = 547,092.07 × 215,155.21
  4. Step 4: Simplify right side
    396,443.32x = 117,709,708,134.41
  5. Step 5: Solve for x
    x = 117,709,708,134.41/396,443.32
  6. Step 6: Final answer
    x = 296,914.34

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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.