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Finding the Fourth Proportional to 281,873.64, 388,982.66 and 154,548.92

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Solution

The fourth proportional to 281,873.64, 388,982.66 and 154,548.92 is: 213,275.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,873.64 : 388,982.66 = 154,548.92 : x
  2. Step 2: Convert to fraction form
    281,873.64/388,982.66 = 154,548.92/x
  3. Step 3: Cross multiply
    281,873.64x = 388,982.66 × 154,548.92
  4. Step 4: Simplify right side
    281,873.64x = 60,116,850,001.73
  5. Step 5: Solve for x
    x = 60,116,850,001.73/281,873.64
  6. Step 6: Final answer
    x = 213,275.88

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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.