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Finding the Fourth Proportional to 266,053.70, 399,080.55 and 126,085.70

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Solution

The fourth proportional to 266,053.70, 399,080.55 and 126,085.70 is: 189,128.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,053.70 : 399,080.55 = 126,085.70 : x
  2. Step 2: Convert to fraction form
    266,053.70/399,080.55 = 126,085.70/x
  3. Step 3: Cross multiply
    266,053.70x = 399,080.55 × 126,085.70
  4. Step 4: Simplify right side
    266,053.70x = 50,318,350,503.14
  5. Step 5: Solve for x
    x = 50,318,350,503.14/266,053.70
  6. Step 6: Final answer
    x = 189,128.55

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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.