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Finding the Fourth Proportional to 212,272.88, 318,146.88 and 107,121.92

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Solution

The fourth proportional to 212,272.88, 318,146.88 and 107,121.92 is: 160,550.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,272.88 : 318,146.88 = 107,121.92 : x
  2. Step 2: Convert to fraction form
    212,272.88/318,146.88 = 107,121.92/x
  3. Step 3: Cross multiply
    212,272.88x = 318,146.88 × 107,121.92
  4. Step 4: Simplify right side
    212,272.88x = 34,080,504,627.61
  5. Step 5: Solve for x
    x = 34,080,504,627.61/212,272.88
  6. Step 6: Final answer
    x = 160,550.44

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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.