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Finding the Fourth Proportional to 220,630.02, 330,879.06 and 80,355.84

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Solution

The fourth proportional to 220,630.02, 330,879.06 and 80,355.84 is: 120,509.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,630.02 : 330,879.06 = 80,355.84 : x
  2. Step 2: Convert to fraction form
    220,630.02/330,879.06 = 80,355.84/x
  3. Step 3: Cross multiply
    220,630.02x = 330,879.06 × 80,355.84
  4. Step 4: Simplify right side
    220,630.02x = 26,588,064,804.71
  5. Step 5: Solve for x
    x = 26,588,064,804.71/220,630.02
  6. Step 6: Final answer
    x = 120,509.73

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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.