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Finding the Fourth Proportional to 220,651.76, 330,661.89 and 125,685.90

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Solution

The fourth proportional to 220,651.76, 330,661.89 and 125,685.90 is: 188,349.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,651.76 : 330,661.89 = 125,685.90 : x
  2. Step 2: Convert to fraction form
    220,651.76/330,661.89 = 125,685.90/x
  3. Step 3: Cross multiply
    220,651.76x = 330,661.89 × 125,685.90
  4. Step 4: Simplify right side
    220,651.76x = 41,559,537,240.35
  5. Step 5: Solve for x
    x = 41,559,537,240.35/220,651.76
  6. Step 6: Final answer
    x = 188,349.00

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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.