Home / 396,435.15-547,080.89-215,147.12

Finding the Fourth Proportional to 396,435.15, 547,080.89 and 215,147.12

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Solution

The fourth proportional to 396,435.15, 547,080.89 and 215,147.12 is: 296,903.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,435.15 : 547,080.89 = 215,147.12 : x
  2. Step 2: Convert to fraction form
    396,435.15/547,080.89 = 215,147.12/x
  3. Step 3: Cross multiply
    396,435.15x = 547,080.89 × 215,147.12
  4. Step 4: Simplify right side
    396,435.15x = 117,702,874,079.40
  5. Step 5: Solve for x
    x = 117,702,874,079.40/396,435.15
  6. Step 6: Final answer
    x = 296,903.22

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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.