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Finding the Fourth Proportional to 275,138.10, 379,770.53 and 178,339.05

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Solution

The fourth proportional to 275,138.10, 379,770.53 and 178,339.05 is: 246,159.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,138.10 : 379,770.53 = 178,339.05 : x
  2. Step 2: Convert to fraction form
    275,138.10/379,770.53 = 178,339.05/x
  3. Step 3: Cross multiply
    275,138.10x = 379,770.53 × 178,339.05
  4. Step 4: Simplify right side
    275,138.10x = 67,727,914,646.50
  5. Step 5: Solve for x
    x = 67,727,914,646.50/275,138.10
  6. Step 6: Final answer
    x = 246,159.71

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1.5x scale

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.