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Finding the Fourth Proportional to 275,020.20, 412,472.70 and 134,879.40

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Solution

The fourth proportional to 275,020.20, 412,472.70 and 134,879.40 is: 202,290.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,020.20 : 412,472.70 = 134,879.40 : x
  2. Step 2: Convert to fraction form
    275,020.20/412,472.70 = 134,879.40/x
  3. Step 3: Cross multiply
    275,020.20x = 412,472.70 × 134,879.40
  4. Step 4: Simplify right side
    275,020.20x = 55,634,070,292.38
  5. Step 5: Solve for x
    x = 55,634,070,292.38/275,020.20
  6. Step 6: Final answer
    x = 202,290.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.