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Finding the Fourth Proportional to 281,699.14, 388,747.88 and 154,372

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Solution

The fourth proportional to 281,699.14, 388,747.88 and 154,372 is: 213,035.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,699.14 : 388,747.88 = 154,372 : x
  2. Step 2: Convert to fraction form
    281,699.14/388,747.88 = 154,372/x
  3. Step 3: Cross multiply
    281,699.14x = 388,747.88 × 154,372
  4. Step 4: Simplify right side
    281,699.14x = 60,011,787,731.36
  5. Step 5: Solve for x
    x = 60,011,787,731.36/281,699.14
  6. Step 6: Final answer
    x = 213,035.04

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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.