Home / 225,965.60-338,977.20-85,764.32

Finding the Fourth Proportional to 225,965.60, 338,977.20 and 85,764.32

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Solution

The fourth proportional to 225,965.60, 338,977.20 and 85,764.32 is: 128,657.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,965.60 : 338,977.20 = 85,764.32 : x
  2. Step 2: Convert to fraction form
    225,965.60/338,977.20 = 85,764.32/x
  3. Step 3: Cross multiply
    225,965.60x = 338,977.20 × 85,764.32
  4. Step 4: Simplify right side
    225,965.60x = 29,072,149,053.50
  5. Step 5: Solve for x
    x = 29,072,149,053.50/225,965.60
  6. Step 6: Final answer
    x = 128,657.41

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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.