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Finding the Fourth Proportional to 220,235.10, 330,352.65 and 200,535.90

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Solution

The fourth proportional to 220,235.10, 330,352.65 and 200,535.90 is: 300,803.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,235.10 : 330,352.65 = 200,535.90 : x
  2. Step 2: Convert to fraction form
    220,235.10/330,352.65 = 200,535.90/x
  3. Step 3: Cross multiply
    220,235.10x = 330,352.65 × 200,535.90
  4. Step 4: Simplify right side
    220,235.10x = 66,247,565,985.14
  5. Step 5: Solve for x
    x = 66,247,565,985.14/220,235.10
  6. Step 6: Final answer
    x = 300,803.85

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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.