Home / 260,144.01-390,253.20-80,244.63

Finding the Fourth Proportional to 260,144.01, 390,253.20 and 80,244.63

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Solution

The fourth proportional to 260,144.01, 390,253.20 and 80,244.63 is: 120,378.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,144.01 : 390,253.20 = 80,244.63 : x
  2. Step 2: Convert to fraction form
    260,144.01/390,253.20 = 80,244.63/x
  3. Step 3: Cross multiply
    260,144.01x = 390,253.20 × 80,244.63
  4. Step 4: Simplify right side
    260,144.01x = 31,315,723,640.32
  5. Step 5: Solve for x
    x = 31,315,723,640.32/260,144.01
  6. Step 6: Final answer
    x = 120,378.42

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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.