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Finding the Fourth Proportional to 220,840.48, 330,606.77 and 136,328.90

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Solution

The fourth proportional to 220,840.48, 330,606.77 and 136,328.90 is: 204,089.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,840.48 : 330,606.77 = 136,328.90 : x
  2. Step 2: Convert to fraction form
    220,840.48/330,606.77 = 136,328.90/x
  3. Step 3: Cross multiply
    220,840.48x = 330,606.77 × 136,328.90
  4. Step 4: Simplify right side
    220,840.48x = 45,071,257,286.65
  5. Step 5: Solve for x
    x = 45,071,257,286.65/220,840.48
  6. Step 6: Final answer
    x = 204,089.66

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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.