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Finding the Fourth Proportional to 220,347.19, 330,550.20 and 87,196.31

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Solution

The fourth proportional to 220,347.19, 330,550.20 and 87,196.31 is: 130,806.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,347.19 : 330,550.20 = 87,196.31 : x
  2. Step 2: Convert to fraction form
    220,347.19/330,550.20 = 87,196.31/x
  3. Step 3: Cross multiply
    220,347.19x = 330,550.20 × 87,196.31
  4. Step 4: Simplify right side
    220,347.19x = 28,822,757,709.76
  5. Step 5: Solve for x
    x = 28,822,757,709.76/220,347.19
  6. Step 6: Final answer
    x = 130,806.11

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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.