Home / 281,200.20-421,800.30-81,527.10

Finding the Fourth Proportional to 281,200.20, 421,800.30 and 81,527.10

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Solution

The fourth proportional to 281,200.20, 421,800.30 and 81,527.10 is: 122,290.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,200.20 : 421,800.30 = 81,527.10 : x
  2. Step 2: Convert to fraction form
    281,200.20/421,800.30 = 81,527.10/x
  3. Step 3: Cross multiply
    281,200.20x = 421,800.30 × 81,527.10
  4. Step 4: Simplify right side
    281,200.20x = 34,388,155,238.13
  5. Step 5: Solve for x
    x = 34,388,155,238.13/281,200.20
  6. Step 6: Final answer
    x = 122,290.65

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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.