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Finding the Fourth Proportional to 281,856.60, 388,959.24 and 154,531.92

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Solution

The fourth proportional to 281,856.60, 388,959.24 and 154,531.92 is: 213,252.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,856.60 : 388,959.24 = 154,531.92 : x
  2. Step 2: Convert to fraction form
    281,856.60/388,959.24 = 154,531.92/x
  3. Step 3: Cross multiply
    281,856.60x = 388,959.24 × 154,531.92
  4. Step 4: Simplify right side
    281,856.60x = 60,106,618,158.94
  5. Step 5: Solve for x
    x = 60,106,618,158.94/281,856.60
  6. Step 6: Final answer
    x = 213,252.48

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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.