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Finding the Fourth Proportional to 220,116.80, 330,175.20 and 218,804.60

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Solution

The fourth proportional to 220,116.80, 330,175.20 and 218,804.60 is: 328,206.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,116.80 : 330,175.20 = 218,804.60 : x
  2. Step 2: Convert to fraction form
    220,116.80/330,175.20 = 218,804.60/x
  3. Step 3: Cross multiply
    220,116.80x = 330,175.20 × 218,804.60
  4. Step 4: Simplify right side
    220,116.80x = 72,243,852,565.92
  5. Step 5: Solve for x
    x = 72,243,852,565.92/220,116.80
  6. Step 6: Final answer
    x = 328,206.90

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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.