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Finding the Fourth Proportional to 220,077.90, 330,821.55 and 204,477.30

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Solution

The fourth proportional to 220,077.90, 330,821.55 and 204,477.30 is: 307,370.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,077.90 : 330,821.55 = 204,477.30 : x
  2. Step 2: Convert to fraction form
    220,077.90/330,821.55 = 204,477.30/x
  3. Step 3: Cross multiply
    220,077.90x = 330,821.55 × 204,477.30
  4. Step 4: Simplify right side
    220,077.90x = 67,645,497,325.82
  5. Step 5: Solve for x
    x = 67,645,497,325.82/220,077.90
  6. Step 6: Final answer
    x = 307,370.70

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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.