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Finding the Fourth Proportional to 217,208.28, 299,755.80 and 126,622.68

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Solution

The fourth proportional to 217,208.28, 299,755.80 and 126,622.68 is: 174,744.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,208.28 : 299,755.80 = 126,622.68 : x
  2. Step 2: Convert to fraction form
    217,208.28/299,755.80 = 126,622.68/x
  3. Step 3: Cross multiply
    217,208.28x = 299,755.80 × 126,622.68
  4. Step 4: Simplify right side
    217,208.28x = 37,955,882,741.54
  5. Step 5: Solve for x
    x = 37,955,882,741.54/217,208.28
  6. Step 6: Final answer
    x = 174,744.18

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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.