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Finding the Fourth Proportional to 281,785.92, 388,869.29 and 152,728.55

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Solution

The fourth proportional to 281,785.92, 388,869.29 and 152,728.55 is: 210,767.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,785.92 : 388,869.29 = 152,728.55 : x
  2. Step 2: Convert to fraction form
    281,785.92/388,869.29 = 152,728.55/x
  3. Step 3: Cross multiply
    281,785.92x = 388,869.29 × 152,728.55
  4. Step 4: Simplify right side
    281,785.92x = 59,391,440,093.24
  5. Step 5: Solve for x
    x = 59,391,440,093.24/281,785.92
  6. Step 6: Final answer
    x = 210,767.95

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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.