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Finding the Fourth Proportional to 321,632.60, 482,679.30 and 134,778.20

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Solution

The fourth proportional to 321,632.60, 482,679.30 and 134,778.20 is: 202,263.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,632.60 : 482,679.30 = 134,778.20 : x
  2. Step 2: Convert to fraction form
    321,632.60/482,679.30 = 134,778.20/x
  3. Step 3: Cross multiply
    321,632.60x = 482,679.30 × 134,778.20
  4. Step 4: Simplify right side
    321,632.60x = 65,054,647,231.26
  5. Step 5: Solve for x
    x = 65,054,647,231.26/321,632.60
  6. Step 6: Final answer
    x = 202,263.85

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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.