Home / 280,852.20-421,278.30-81,179.10

Finding the Fourth Proportional to 280,852.20, 421,278.30 and 81,179.10

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Solution

The fourth proportional to 280,852.20, 421,278.30 and 81,179.10 is: 121,768.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,852.20 : 421,278.30 = 81,179.10 : x
  2. Step 2: Convert to fraction form
    280,852.20/421,278.30 = 81,179.10/x
  3. Step 3: Cross multiply
    280,852.20x = 421,278.30 × 81,179.10
  4. Step 4: Simplify right side
    280,852.20x = 34,198,993,243.53
  5. Step 5: Solve for x
    x = 34,198,993,243.53/280,852.20
  6. Step 6: Final answer
    x = 121,768.65

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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.