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Finding the Fourth Proportional to 407,722.60, 611,365.20 and 170,797.60

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Solution

The fourth proportional to 407,722.60, 611,365.20 and 170,797.60 is: 256,104.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,722.60 : 611,365.20 = 170,797.60 : x
  2. Step 2: Convert to fraction form
    407,722.60/611,365.20 = 170,797.60/x
  3. Step 3: Cross multiply
    407,722.60x = 611,365.20 × 170,797.60
  4. Step 4: Simplify right side
    407,722.60x = 104,419,708,883.52
  5. Step 5: Solve for x
    x = 104,419,708,883.52/407,722.60
  6. Step 6: Final answer
    x = 256,104.79

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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.