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Finding the Fourth Proportional to 217,511.74, 300,098.94 and 126,803.49

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Solution

The fourth proportional to 217,511.74, 300,098.94 and 126,803.49 is: 174,949.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,511.74 : 300,098.94 = 126,803.49 : x
  2. Step 2: Convert to fraction form
    217,511.74/300,098.94 = 126,803.49/x
  3. Step 3: Cross multiply
    217,511.74x = 300,098.94 × 126,803.49
  4. Step 4: Simplify right side
    217,511.74x = 38,053,592,937.30
  5. Step 5: Solve for x
    x = 38,053,592,937.30/217,511.74
  6. Step 6: Final answer
    x = 174,949.60

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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.