Home / 220,716.20-331,247.10-102,402.20

Finding the Fourth Proportional to 220,716.20, 331,247.10 and 102,402.20

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Solution

The fourth proportional to 220,716.20, 331,247.10 and 102,402.20 is: 153,683.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,716.20 : 331,247.10 = 102,402.20 : x
  2. Step 2: Convert to fraction form
    220,716.20/331,247.10 = 102,402.20/x
  3. Step 3: Cross multiply
    220,716.20x = 331,247.10 × 102,402.20
  4. Step 4: Simplify right side
    220,716.20x = 33,920,431,783.62
  5. Step 5: Solve for x
    x = 33,920,431,783.62/220,716.20
  6. Step 6: Final answer
    x = 153,683.47

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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.