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Finding the Fourth Proportional to 239,555.84, 330,617.76 and 199,200.20

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Solution

The fourth proportional to 239,555.84, 330,617.76 and 199,200.20 is: 274,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,555.84 : 330,617.76 = 199,200.20 : x
  2. Step 2: Convert to fraction form
    239,555.84/330,617.76 = 199,200.20/x
  3. Step 3: Cross multiply
    239,555.84x = 330,617.76 × 199,200.20
  4. Step 4: Simplify right side
    239,555.84x = 65,859,123,915.55
  5. Step 5: Solve for x
    x = 65,859,123,915.55/239,555.84
  6. Step 6: Final answer
    x = 274,921.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.