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Finding the Fourth Proportional to 281,496.96, 388,472.22 and 154,171.44

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Solution

The fourth proportional to 281,496.96, 388,472.22 and 154,171.44 is: 212,760.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,496.96 : 388,472.22 = 154,171.44 : x
  2. Step 2: Convert to fraction form
    281,496.96/388,472.22 = 154,171.44/x
  3. Step 3: Cross multiply
    281,496.96x = 388,472.22 × 154,171.44
  4. Step 4: Simplify right side
    281,496.96x = 59,891,321,557.40
  5. Step 5: Solve for x
    x = 59,891,321,557.40/281,496.96
  6. Step 6: Final answer
    x = 212,760.10

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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.