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Finding the Fourth Proportional to 220,881.60, 330,544.80 and 202,219.20

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Solution

The fourth proportional to 220,881.60, 330,544.80 and 202,219.20 is: 302,616.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,881.60 : 330,544.80 = 202,219.20 : x
  2. Step 2: Convert to fraction form
    220,881.60/330,544.80 = 202,219.20/x
  3. Step 3: Cross multiply
    220,881.60x = 330,544.80 × 202,219.20
  4. Step 4: Simplify right side
    220,881.60x = 66,842,505,020.16
  5. Step 5: Solve for x
    x = 66,842,505,020.16/220,881.60
  6. Step 6: Final answer
    x = 302,616.90

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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.