Home / 220,298.47-330,453.20-78,137.39

Finding the Fourth Proportional to 220,298.47, 330,453.20 and 78,137.39

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Solution

The fourth proportional to 220,298.47, 330,453.20 and 78,137.39 is: 117,208.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,298.47 : 330,453.20 = 78,137.39 : x
  2. Step 2: Convert to fraction form
    220,298.47/330,453.20 = 78,137.39/x
  3. Step 3: Cross multiply
    220,298.47x = 330,453.20 × 78,137.39
  4. Step 4: Simplify right side
    220,298.47x = 25,820,751,586.62
  5. Step 5: Solve for x
    x = 25,820,751,586.62/220,298.47
  6. Step 6: Final answer
    x = 117,208.04

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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.