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Finding the Fourth Proportional to 193,747.20, 290,620.80 and 170,419.20

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Solution

The fourth proportional to 193,747.20, 290,620.80 and 170,419.20 is: 255,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,747.20 : 290,620.80 = 170,419.20 : x
  2. Step 2: Convert to fraction form
    193,747.20/290,620.80 = 170,419.20/x
  3. Step 3: Cross multiply
    193,747.20x = 290,620.80 × 170,419.20
  4. Step 4: Simplify right side
    193,747.20x = 49,527,364,239.36
  5. Step 5: Solve for x
    x = 49,527,364,239.36/193,747.20
  6. Step 6: Final answer
    x = 255,628.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.