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Finding the Fourth Proportional to 216,760.20, 325,529.10 and 209,761.80

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Solution

The fourth proportional to 216,760.20, 325,529.10 and 209,761.80 is: 315,018.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,760.20 : 325,529.10 = 209,761.80 : x
  2. Step 2: Convert to fraction form
    216,760.20/325,529.10 = 209,761.80/x
  3. Step 3: Cross multiply
    216,760.20x = 325,529.10 × 209,761.80
  4. Step 4: Simplify right side
    216,760.20x = 68,283,569,968.38
  5. Step 5: Solve for x
    x = 68,283,569,968.38/216,760.20
  6. Step 6: Final answer
    x = 315,018.95

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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.