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Finding the Fourth Proportional to 220,464.80, 330,697.20 and 214,632.80

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Solution

The fourth proportional to 220,464.80, 330,697.20 and 214,632.80 is: 321,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,464.80 : 330,697.20 = 214,632.80 : x
  2. Step 2: Convert to fraction form
    220,464.80/330,697.20 = 214,632.80/x
  3. Step 3: Cross multiply
    220,464.80x = 330,697.20 × 214,632.80
  4. Step 4: Simplify right side
    220,464.80x = 70,978,465,988.16
  5. Step 5: Solve for x
    x = 70,978,465,988.16/220,464.80
  6. Step 6: Final answer
    x = 321,949.20

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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.