Home / 281,446.20-421,247.70-218,777.40

Finding the Fourth Proportional to 281,446.20, 421,247.70 and 218,777.40

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Solution

The fourth proportional to 281,446.20, 421,247.70 and 218,777.40 is: 327,449.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,446.20 : 421,247.70 = 218,777.40 : x
  2. Step 2: Convert to fraction form
    281,446.20/421,247.70 = 218,777.40/x
  3. Step 3: Cross multiply
    281,446.20x = 421,247.70 × 218,777.40
  4. Step 4: Simplify right side
    281,446.20x = 92,159,476,561.98
  5. Step 5: Solve for x
    x = 92,159,476,561.98/281,446.20
  6. Step 6: Final answer
    x = 327,449.71

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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.