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Finding the Fourth Proportional to 218,474.28, 300,592.89 and 170,644.59

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Solution

The fourth proportional to 218,474.28, 300,592.89 and 170,644.59 is: 234,785.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,474.28 : 300,592.89 = 170,644.59 : x
  2. Step 2: Convert to fraction form
    218,474.28/300,592.89 = 170,644.59/x
  3. Step 3: Cross multiply
    218,474.28x = 300,592.89 × 170,644.59
  4. Step 4: Simplify right side
    218,474.28x = 51,294,550,470.97
  5. Step 5: Solve for x
    x = 51,294,550,470.97/218,474.28
  6. Step 6: Final answer
    x = 234,785.31

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1.5x scale

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.