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Finding the Fourth Proportional to 220,995.20, 331,492.80 and 96,579.20

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Solution

The fourth proportional to 220,995.20, 331,492.80 and 96,579.20 is: 144,868.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,995.20 : 331,492.80 = 96,579.20 : x
  2. Step 2: Convert to fraction form
    220,995.20/331,492.80 = 96,579.20/x
  3. Step 3: Cross multiply
    220,995.20x = 331,492.80 × 96,579.20
  4. Step 4: Simplify right side
    220,995.20x = 32,015,309,429.76
  5. Step 5: Solve for x
    x = 32,015,309,429.76/220,995.20
  6. Step 6: Final answer
    x = 144,868.80

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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.