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Finding the Fourth Proportional to 329,440.73, 454,288.78 and 281,851.61

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Solution

The fourth proportional to 329,440.73, 454,288.78 and 281,851.61 is: 388,664.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,440.73 : 454,288.78 = 281,851.61 : x
  2. Step 2: Convert to fraction form
    329,440.73/454,288.78 = 281,851.61/x
  3. Step 3: Cross multiply
    329,440.73x = 454,288.78 × 281,851.61
  4. Step 4: Simplify right side
    329,440.73x = 128,042,024,047.94
  5. Step 5: Solve for x
    x = 128,042,024,047.94/329,440.73
  6. Step 6: Final answer
    x = 388,664.83

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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.