Home / 220,407.12-330,416.64-87,380.76

Finding the Fourth Proportional to 220,407.12, 330,416.64 and 87,380.76

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Solution

The fourth proportional to 220,407.12, 330,416.64 and 87,380.76 is: 130,994.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,407.12 : 330,416.64 = 87,380.76 : x
  2. Step 2: Convert to fraction form
    220,407.12/330,416.64 = 87,380.76/x
  3. Step 3: Cross multiply
    220,407.12x = 330,416.64 × 87,380.76
  4. Step 4: Simplify right side
    220,407.12x = 28,872,057,119.85
  5. Step 5: Solve for x
    x = 28,872,057,119.85/220,407.12
  6. Step 6: Final answer
    x = 130,994.21

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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.