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Finding the Fourth Proportional to 262,109.36, 361,344.48 and 221,660.48

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Solution

The fourth proportional to 262,109.36, 361,344.48 and 221,660.48 is: 305,581.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,109.36 : 361,344.48 = 221,660.48 : x
  2. Step 2: Convert to fraction form
    262,109.36/361,344.48 = 221,660.48/x
  3. Step 3: Cross multiply
    262,109.36x = 361,344.48 × 221,660.48
  4. Step 4: Simplify right side
    262,109.36x = 80,095,790,882.15
  5. Step 5: Solve for x
    x = 80,095,790,882.15/262,109.36
  6. Step 6: Final answer
    x = 305,581.57

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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.