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Finding the Fourth Proportional to 275,189.22, 379,409.57 and 178,221.74

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Solution

The fourth proportional to 275,189.22, 379,409.57 and 178,221.74 is: 245,718.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,189.22 : 379,409.57 = 178,221.74 : x
  2. Step 2: Convert to fraction form
    275,189.22/379,409.57 = 178,221.74/x
  3. Step 3: Cross multiply
    275,189.22x = 379,409.57 × 178,221.74
  4. Step 4: Simplify right side
    275,189.22x = 67,619,030,949.90
  5. Step 5: Solve for x
    x = 67,619,030,949.90/275,189.22
  6. Step 6: Final answer
    x = 245,718.31

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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.