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Finding the Fourth Proportional to 265,788.40, 398,701.80 and 88,418.80

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Solution

The fourth proportional to 265,788.40, 398,701.80 and 88,418.80 is: 132,634.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,788.40 : 398,701.80 = 88,418.80 : x
  2. Step 2: Convert to fraction form
    265,788.40/398,701.80 = 88,418.80/x
  3. Step 3: Cross multiply
    265,788.40x = 398,701.80 × 88,418.80
  4. Step 4: Simplify right side
    265,788.40x = 35,252,734,713.84
  5. Step 5: Solve for x
    x = 35,252,734,713.84/265,788.40
  6. Step 6: Final answer
    x = 132,634.59

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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.