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Finding the Fourth Proportional to 218,604.80, 327,907.20 and 130,131.20

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Solution

The fourth proportional to 218,604.80, 327,907.20 and 130,131.20 is: 195,196.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,604.80 : 327,907.20 = 130,131.20 : x
  2. Step 2: Convert to fraction form
    218,604.80/327,907.20 = 130,131.20/x
  3. Step 3: Cross multiply
    218,604.80x = 327,907.20 × 130,131.20
  4. Step 4: Simplify right side
    218,604.80x = 42,670,957,424.64
  5. Step 5: Solve for x
    x = 42,670,957,424.64/218,604.80
  6. Step 6: Final answer
    x = 195,196.80

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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.