Home / 220,672.10-331,057.35-80,430.72

Finding the Fourth Proportional to 220,672.10, 331,057.35 and 80,430.72

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Solution

The fourth proportional to 220,672.10, 331,057.35 and 80,430.72 is: 120,664.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,672.10 : 331,057.35 = 80,430.72 : x
  2. Step 2: Convert to fraction form
    220,672.10/331,057.35 = 80,430.72/x
  3. Step 3: Cross multiply
    220,672.10x = 331,057.35 × 80,430.72
  4. Step 4: Simplify right side
    220,672.10x = 26,627,181,021.79
  5. Step 5: Solve for x
    x = 26,627,181,021.79/220,672.10
  6. Step 6: Final answer
    x = 120,664.02

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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.