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Finding the Fourth Proportional to 266,370.52, 399,752.34 and 126,128.92

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Solution

The fourth proportional to 266,370.52, 399,752.34 and 126,128.92 is: 189,286.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,370.52 : 399,752.34 = 126,128.92 : x
  2. Step 2: Convert to fraction form
    266,370.52/399,752.34 = 126,128.92/x
  3. Step 3: Cross multiply
    266,370.52x = 399,752.34 × 126,128.92
  4. Step 4: Simplify right side
    266,370.52x = 50,420,330,911.67
  5. Step 5: Solve for x
    x = 50,420,330,911.67/266,370.52
  6. Step 6: Final answer
    x = 189,286.45

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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.