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Finding the Fourth Proportional to 217,220.00, 299,751.21 and 126,590.72

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Solution

The fourth proportional to 217,220.00, 299,751.21 and 126,590.72 is: 174,687.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,220.00 : 299,751.21 = 126,590.72 : x
  2. Step 2: Convert to fraction form
    217,220.00/299,751.21 = 126,590.72/x
  3. Step 3: Cross multiply
    217,220.00x = 299,751.21 × 126,590.72
  4. Step 4: Simplify right side
    217,220.00x = 37,945,719,996.02
  5. Step 5: Solve for x
    x = 37,945,719,996.02/217,220.00
  6. Step 6: Final answer
    x = 174,687.97

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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.