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Finding the Fourth Proportional to 281,793.10, 388,914.36 and 174,397.78

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Solution

The fourth proportional to 281,793.10, 388,914.36 and 174,397.78 is: 240,693.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,793.10 : 388,914.36 = 174,397.78 : x
  2. Step 2: Convert to fraction form
    281,793.10/388,914.36 = 174,397.78/x
  3. Step 3: Cross multiply
    281,793.10x = 388,914.36 × 174,397.78
  4. Step 4: Simplify right side
    281,793.10x = 67,825,800,994.12
  5. Step 5: Solve for x
    x = 67,825,800,994.12/281,793.10
  6. Step 6: Final answer
    x = 240,693.62

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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.