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Finding the Fourth Proportional to 170,187.44, 255,367.28 and 70,419.20

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Solution

The fourth proportional to 170,187.44, 255,367.28 and 70,419.20 is: 105,664.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,187.44 : 255,367.28 = 70,419.20 : x
  2. Step 2: Convert to fraction form
    170,187.44/255,367.28 = 70,419.20/x
  3. Step 3: Cross multiply
    170,187.44x = 255,367.28 × 70,419.20
  4. Step 4: Simplify right side
    170,187.44x = 17,982,759,563.78
  5. Step 5: Solve for x
    x = 17,982,759,563.78/170,187.44
  6. Step 6: Final answer
    x = 105,664.43

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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.