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Finding the Fourth Proportional to 220,568.69, 330,962.45 and 87,446.00

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Solution

The fourth proportional to 220,568.69, 330,962.45 and 87,446.00 is: 131,212.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,568.69 : 330,962.45 = 87,446.00 : x
  2. Step 2: Convert to fraction form
    220,568.69/330,962.45 = 87,446.00/x
  3. Step 3: Cross multiply
    220,568.69x = 330,962.45 × 87,446.00
  4. Step 4: Simplify right side
    220,568.69x = 28,941,340,310.66
  5. Step 5: Solve for x
    x = 28,941,340,310.66/220,568.69
  6. Step 6: Final answer
    x = 131,212.37

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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.