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Finding the Fourth Proportional to 281,375.64, 388,282.86 and 154,026.54

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Solution

The fourth proportional to 281,375.64, 388,282.86 and 154,026.54 is: 212,548.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,375.64 : 388,282.86 = 154,026.54 : x
  2. Step 2: Convert to fraction form
    281,375.64/388,282.86 = 154,026.54/x
  3. Step 3: Cross multiply
    281,375.64x = 388,282.86 × 154,026.54
  4. Step 4: Simplify right side
    281,375.64x = 59,805,865,467.10
  5. Step 5: Solve for x
    x = 59,805,865,467.10/281,375.64
  6. Step 6: Final answer
    x = 212,548.13

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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.