Home / 220,908.16-331,401.20-80,862.40

Finding the Fourth Proportional to 220,908.16, 331,401.20 and 80,862.40

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Solution

The fourth proportional to 220,908.16, 331,401.20 and 80,862.40 is: 121,307.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,908.16 : 331,401.20 = 80,862.40 : x
  2. Step 2: Convert to fraction form
    220,908.16/331,401.20 = 80,862.40/x
  3. Step 3: Cross multiply
    220,908.16x = 331,401.20 × 80,862.40
  4. Step 4: Simplify right side
    220,908.16x = 26,797,896,394.88
  5. Step 5: Solve for x
    x = 26,797,896,394.88/220,908.16
  6. Step 6: Final answer
    x = 121,307.86

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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.