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Finding the Fourth Proportional to 217,548.64, 300,212.40 and 125,668

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Solution

The fourth proportional to 217,548.64, 300,212.40 and 125,668 is: 173,419.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,548.64 : 300,212.40 = 125,668 : x
  2. Step 2: Convert to fraction form
    217,548.64/300,212.40 = 125,668/x
  3. Step 3: Cross multiply
    217,548.64x = 300,212.40 × 125,668
  4. Step 4: Simplify right side
    217,548.64x = 37,727,091,883.20
  5. Step 5: Solve for x
    x = 37,727,091,883.20/217,548.64
  6. Step 6: Final answer
    x = 173,419.11

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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.