Home / 260,823.20-391,137.60-92,278.40

Finding the Fourth Proportional to 260,823.20, 391,137.60 and 92,278.40

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Solution

The fourth proportional to 260,823.20, 391,137.60 and 92,278.40 is: 138,383.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,823.20 : 391,137.60 = 92,278.40 : x
  2. Step 2: Convert to fraction form
    260,823.20/391,137.60 = 92,278.40/x
  3. Step 3: Cross multiply
    260,823.20x = 391,137.60 × 92,278.40
  4. Step 4: Simplify right side
    260,823.20x = 36,093,551,907.84
  5. Step 5: Solve for x
    x = 36,093,551,907.84/260,823.20
  6. Step 6: Final answer
    x = 138,383.21

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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.