Home / 396,418.06-547,057.30-215,130.02

Finding the Fourth Proportional to 396,418.06, 547,057.30 and 215,130.02

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Solution

The fourth proportional to 396,418.06, 547,057.30 and 215,130.02 is: 296,879.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,418.06 : 547,057.30 = 215,130.02 : x
  2. Step 2: Convert to fraction form
    396,418.06/547,057.30 = 215,130.02/x
  3. Step 3: Cross multiply
    396,418.06x = 547,057.30 × 215,130.02
  4. Step 4: Simplify right side
    396,418.06x = 117,688,447,890.15
  5. Step 5: Solve for x
    x = 117,688,447,890.15/396,418.06
  6. Step 6: Final answer
    x = 296,879.63

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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.