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Finding the Fourth Proportional to 275,512.65, 380,109.63 and 180,074.40

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Solution

The fourth proportional to 275,512.65, 380,109.63 and 180,074.40 is: 248,438.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,512.65 : 380,109.63 = 180,074.40 : x
  2. Step 2: Convert to fraction form
    275,512.65/380,109.63 = 180,074.40/x
  3. Step 3: Cross multiply
    275,512.65x = 380,109.63 × 180,074.40
  4. Step 4: Simplify right side
    275,512.65x = 68,448,013,556.47
  5. Step 5: Solve for x
    x = 68,448,013,556.47/275,512.65
  6. Step 6: Final answer
    x = 248,438.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.