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Finding the Fourth Proportional to 260,761.58, 391,059.41 and 134,385.78

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Solution

The fourth proportional to 260,761.58, 391,059.41 and 134,385.78 is: 201,535.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,761.58 : 391,059.41 = 134,385.78 : x
  2. Step 2: Convert to fraction form
    260,761.58/391,059.41 = 134,385.78/x
  3. Step 3: Cross multiply
    260,761.58x = 391,059.41 × 134,385.78
  4. Step 4: Simplify right side
    260,761.58x = 52,552,823,167.26
  5. Step 5: Solve for x
    x = 52,552,823,167.26/260,761.58
  6. Step 6: Final answer
    x = 201,535.92

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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.