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Finding the Fourth Proportional to 281,773.32, 388,845.42 and 154,454.28

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Solution

The fourth proportional to 281,773.32, 388,845.42 and 154,454.28 is: 213,145.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,773.32 : 388,845.42 = 154,454.28 : x
  2. Step 2: Convert to fraction form
    281,773.32/388,845.42 = 154,454.28/x
  3. Step 3: Cross multiply
    281,773.32x = 388,845.42 × 154,454.28
  4. Step 4: Simplify right side
    281,773.32x = 60,058,839,377.40
  5. Step 5: Solve for x
    x = 60,058,839,377.40/281,773.32
  6. Step 6: Final answer
    x = 213,145.94

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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.