Home / 240,629.16-360,819.16-128,279.20

Finding the Fourth Proportional to 240,629.16, 360,819.16 and 128,279.20

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Solution

The fourth proportional to 240,629.16, 360,819.16 and 128,279.20 is: 192,352.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,629.16 : 360,819.16 = 128,279.20 : x
  2. Step 2: Convert to fraction form
    240,629.16/360,819.16 = 128,279.20/x
  3. Step 3: Cross multiply
    240,629.16x = 360,819.16 × 128,279.20
  4. Step 4: Simplify right side
    240,629.16x = 46,285,593,189.47
  5. Step 5: Solve for x
    x = 46,285,593,189.47/240,629.16
  6. Step 6: Final answer
    x = 192,352.39

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1.5x scale

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.