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Finding the Fourth Proportional to 165,414.40, 248,121.60 and 157,811.20

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Solution

The fourth proportional to 165,414.40, 248,121.60 and 157,811.20 is: 236,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,414.40 : 248,121.60 = 157,811.20 : x
  2. Step 2: Convert to fraction form
    165,414.40/248,121.60 = 157,811.20/x
  3. Step 3: Cross multiply
    165,414.40x = 248,121.60 × 157,811.20
  4. Step 4: Simplify right side
    165,414.40x = 39,156,367,441.92
  5. Step 5: Solve for x
    x = 39,156,367,441.92/165,414.40
  6. Step 6: Final answer
    x = 236,716.80

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1.5x scale

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.