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Finding the Fourth Proportional to 260,753.28, 391,067.28 and 120,377.04

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Solution

The fourth proportional to 260,753.28, 391,067.28 and 120,377.04 is: 180,536.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,753.28 : 391,067.28 = 120,377.04 : x
  2. Step 2: Convert to fraction form
    260,753.28/391,067.28 = 120,377.04/x
  3. Step 3: Cross multiply
    260,753.28x = 391,067.28 × 120,377.04
  4. Step 4: Simplify right side
    260,753.28x = 47,075,521,607.25
  5. Step 5: Solve for x
    x = 47,075,521,607.25/260,753.28
  6. Step 6: Final answer
    x = 180,536.64

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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.