Home / 396,410.31-547,047.66-215,122.19

Finding the Fourth Proportional to 396,410.31, 547,047.66 and 215,122.19

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Solution

The fourth proportional to 396,410.31, 547,047.66 and 215,122.19 is: 296,869.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,410.31 : 547,047.66 = 215,122.19 : x
  2. Step 2: Convert to fraction form
    396,410.31/547,047.66 = 215,122.19/x
  3. Step 3: Cross multiply
    396,410.31x = 547,047.66 × 215,122.19
  4. Step 4: Simplify right side
    396,410.31x = 117,682,087,918.34
  5. Step 5: Solve for x
    x = 117,682,087,918.34/396,410.31
  6. Step 6: Final answer
    x = 296,869.39

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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.