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Finding the Fourth Proportional to 175,278.40, 262,917.60 and 128,276.80

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Solution

The fourth proportional to 175,278.40, 262,917.60 and 128,276.80 is: 192,415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,278.40 : 262,917.60 = 128,276.80 : x
  2. Step 2: Convert to fraction form
    175,278.40/262,917.60 = 128,276.80/x
  3. Step 3: Cross multiply
    175,278.40x = 262,917.60 × 128,276.80
  4. Step 4: Simplify right side
    175,278.40x = 33,726,228,391.68
  5. Step 5: Solve for x
    x = 33,726,228,391.68/175,278.40
  6. Step 6: Final answer
    x = 192,415.20

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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.