Home / 263,282.40-394,964.55-85,748.10

Finding the Fourth Proportional to 263,282.40, 394,964.55 and 85,748.10

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Solution

The fourth proportional to 263,282.40, 394,964.55 and 85,748.10 is: 128,635.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,282.40 : 394,964.55 = 85,748.10 : x
  2. Step 2: Convert to fraction form
    263,282.40/394,964.55 = 85,748.10/x
  3. Step 3: Cross multiply
    263,282.40x = 394,964.55 × 85,748.10
  4. Step 4: Simplify right side
    263,282.40x = 33,867,459,729.86
  5. Step 5: Solve for x
    x = 33,867,459,729.86/263,282.40
  6. Step 6: Final answer
    x = 128,635.49

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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.