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Finding the Fourth Proportional to 220,851,438.80, 331,274,047.80 and 99,682,696.40

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Solution

The fourth proportional to 220,851,438.80, 331,274,047.80 and 99,682,696.40 is: 149,522,640.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,851,438.80 : 331,274,047.80 = 99,682,696.40 : x
  2. Step 2: Convert to fraction form
    220,851,438.80/331,274,047.80 = 99,682,696.40/x
  3. Step 3: Cross multiply
    220,851,438.80x = 331,274,047.80 × 99,682,696.40
  4. Step 4: Simplify right side
    220,851,438.80x = 33,022,290,332,046,492
  5. Step 5: Solve for x
    x = 33,022,290,332,046,492/220,851,438.80
  6. Step 6: Final answer
    x = 149,522,640.70

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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.