Home / 275,015.12-379,536.40-154,195.52

Finding the Fourth Proportional to 275,015.12, 379,536.40 and 154,195.52

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Solution

The fourth proportional to 275,015.12, 379,536.40 and 154,195.52 is: 212,798.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,015.12 : 379,536.40 = 154,195.52 : x
  2. Step 2: Convert to fraction form
    275,015.12/379,536.40 = 154,195.52/x
  3. Step 3: Cross multiply
    275,015.12x = 379,536.40 × 154,195.52
  4. Step 4: Simplify right side
    275,015.12x = 58,522,812,556.93
  5. Step 5: Solve for x
    x = 58,522,812,556.93/275,015.12
  6. Step 6: Final answer
    x = 212,798.53

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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.