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Finding the Fourth Proportional to 217,550.64, 300,215.16 and 125,670

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Solution

The fourth proportional to 217,550.64, 300,215.16 and 125,670 is: 173,421.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,550.64 : 300,215.16 = 125,670 : x
  2. Step 2: Convert to fraction form
    217,550.64/300,215.16 = 125,670/x
  3. Step 3: Cross multiply
    217,550.64x = 300,215.16 × 125,670
  4. Step 4: Simplify right side
    217,550.64x = 37,728,039,157.20
  5. Step 5: Solve for x
    x = 37,728,039,157.20/217,550.64
  6. Step 6: Final answer
    x = 173,421.87

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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.