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Finding the Fourth Proportional to 310,843.91, 428,965.25 and 183,527.70

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Solution

The fourth proportional to 310,843.91, 428,965.25 and 183,527.70 is: 253,268.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,843.91 : 428,965.25 = 183,527.70 : x
  2. Step 2: Convert to fraction form
    310,843.91/428,965.25 = 183,527.70/x
  3. Step 3: Cross multiply
    310,843.91x = 428,965.25 × 183,527.70
  4. Step 4: Simplify right side
    310,843.91x = 78,727,004,794.79
  5. Step 5: Solve for x
    x = 78,727,004,794.79/310,843.91
  6. Step 6: Final answer
    x = 253,268.61

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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.