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Finding the Fourth Proportional to 281,778, 388,853.73 and 154,454.46

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Solution

The fourth proportional to 281,778, 388,853.73 and 154,454.46 is: 213,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,778 : 388,853.73 = 154,454.46 : x
  2. Step 2: Convert to fraction form
    281,778/388,853.73 = 154,454.46/x
  3. Step 3: Cross multiply
    281,778x = 388,853.73 × 154,454.46
  4. Step 4: Simplify right side
    281,778x = 60,060,192,886.14
  5. Step 5: Solve for x
    x = 60,060,192,886.14/281,778
  6. Step 6: Final answer
    x = 213,147.20

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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.