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Finding the Fourth Proportional to 165,086.40, 247,629.60 and 155,244.90

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Solution

The fourth proportional to 165,086.40, 247,629.60 and 155,244.90 is: 232,867.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,086.40 : 247,629.60 = 155,244.90 : x
  2. Step 2: Convert to fraction form
    165,086.40/247,629.60 = 155,244.90/x
  3. Step 3: Cross multiply
    165,086.40x = 247,629.60 × 155,244.90
  4. Step 4: Simplify right side
    165,086.40x = 38,443,232,489.04
  5. Step 5: Solve for x
    x = 38,443,232,489.04/165,086.40
  6. Step 6: Final answer
    x = 232,867.35

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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.