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Finding the Fourth Proportional to 217,080.98, 299,608.84 and 126,490.65

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Solution

The fourth proportional to 217,080.98, 299,608.84 and 126,490.65 is: 174,578.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,080.98 : 299,608.84 = 126,490.65 : x
  2. Step 2: Convert to fraction form
    217,080.98/299,608.84 = 126,490.65/x
  3. Step 3: Cross multiply
    217,080.98x = 299,608.84 × 126,490.65
  4. Step 4: Simplify right side
    217,080.98x = 37,897,715,951.93
  5. Step 5: Solve for x
    x = 37,897,715,951.93/217,080.98
  6. Step 6: Final answer
    x = 174,578.70

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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.