Home / 240,629.87-360,820.19-128,279.90

Finding the Fourth Proportional to 240,629.87, 360,820.19 and 128,279.90

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Solution

The fourth proportional to 240,629.87, 360,820.19 and 128,279.90 is: 192,353.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,629.87 : 360,820.19 = 128,279.90 : x
  2. Step 2: Convert to fraction form
    240,629.87/360,820.19 = 128,279.90/x
  3. Step 3: Cross multiply
    240,629.87x = 360,820.19 × 128,279.90
  4. Step 4: Simplify right side
    240,629.87x = 46,285,975,445.68
  5. Step 5: Solve for x
    x = 46,285,975,445.68/240,629.87
  6. Step 6: Final answer
    x = 192,353.41

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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.