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Finding the Fourth Proportional to 279,082.80, 418,624.20 and 200,026.80

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Solution

The fourth proportional to 279,082.80, 418,624.20 and 200,026.80 is: 300,040.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,082.80 : 418,624.20 = 200,026.80 : x
  2. Step 2: Convert to fraction form
    279,082.80/418,624.20 = 200,026.80/x
  3. Step 3: Cross multiply
    279,082.80x = 418,624.20 × 200,026.80
  4. Step 4: Simplify right side
    279,082.80x = 83,736,059,128.56
  5. Step 5: Solve for x
    x = 83,736,059,128.56/279,082.80
  6. Step 6: Final answer
    x = 300,040.20

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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.