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Finding the Fourth Proportional to 217,333.13, 299,920.79 and 126,751.91

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Solution

The fourth proportional to 217,333.13, 299,920.79 and 126,751.91 is: 174,918.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,333.13 : 299,920.79 = 126,751.91 : x
  2. Step 2: Convert to fraction form
    217,333.13/299,920.79 = 126,751.91/x
  3. Step 3: Cross multiply
    217,333.13x = 299,920.79 × 126,751.91
  4. Step 4: Simplify right side
    217,333.13x = 38,015,531,798.48
  5. Step 5: Solve for x
    x = 38,015,531,798.48/217,333.13
  6. Step 6: Final answer
    x = 174,918.26

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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.