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Finding the Fourth Proportional to 274,166.40, 411,249.60 and 126,422.40

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Solution

The fourth proportional to 274,166.40, 411,249.60 and 126,422.40 is: 189,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,166.40 : 411,249.60 = 126,422.40 : x
  2. Step 2: Convert to fraction form
    274,166.40/411,249.60 = 126,422.40/x
  3. Step 3: Cross multiply
    274,166.40x = 411,249.60 × 126,422.40
  4. Step 4: Simplify right side
    274,166.40x = 51,991,161,431.04
  5. Step 5: Solve for x
    x = 51,991,161,431.04/274,166.40
  6. Step 6: Final answer
    x = 189,633.60

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1.5x scale

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.