Home / 281,108.10-421,856.55-202,278.90

Finding the Fourth Proportional to 281,108.10, 421,856.55 and 202,278.90

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Solution

The fourth proportional to 281,108.10, 421,856.55 and 202,278.90 is: 303,558.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,108.10 : 421,856.55 = 202,278.90 : x
  2. Step 2: Convert to fraction form
    281,108.10/421,856.55 = 202,278.90/x
  3. Step 3: Cross multiply
    281,108.10x = 421,856.55 × 202,278.90
  4. Step 4: Simplify right side
    281,108.10x = 85,332,678,891.80
  5. Step 5: Solve for x
    x = 85,332,678,891.80/281,108.10
  6. Step 6: Final answer
    x = 303,558.24

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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.