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Finding the Fourth Proportional to 274,124.40, 411,186.60 and 126,380.40

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Solution

The fourth proportional to 274,124.40, 411,186.60 and 126,380.40 is: 189,570.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,124.40 : 411,186.60 = 126,380.40 : x
  2. Step 2: Convert to fraction form
    274,124.40/411,186.60 = 126,380.40/x
  3. Step 3: Cross multiply
    274,124.40x = 411,186.60 × 126,380.40
  4. Step 4: Simplify right side
    274,124.40x = 51,965,926,982.64
  5. Step 5: Solve for x
    x = 51,965,926,982.64/274,124.40
  6. Step 6: Final answer
    x = 189,570.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.