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Finding the Fourth Proportional to 281,992.60, 389,174.76 and 154,693

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Solution

The fourth proportional to 281,992.60, 389,174.76 and 154,693 is: 213,490.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,992.60 : 389,174.76 = 154,693 : x
  2. Step 2: Convert to fraction form
    281,992.60/389,174.76 = 154,693/x
  3. Step 3: Cross multiply
    281,992.60x = 389,174.76 × 154,693
  4. Step 4: Simplify right side
    281,992.60x = 60,202,611,148.68
  5. Step 5: Solve for x
    x = 60,202,611,148.68/281,992.60
  6. Step 6: Final answer
    x = 213,490.04

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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.