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Finding the Fourth Proportional to 225,643.68, 311,400.72 and 125,039.52

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Solution

The fourth proportional to 225,643.68, 311,400.72 and 125,039.52 is: 172,561.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,643.68 : 311,400.72 = 125,039.52 : x
  2. Step 2: Convert to fraction form
    225,643.68/311,400.72 = 125,039.52/x
  3. Step 3: Cross multiply
    225,643.68x = 311,400.72 × 125,039.52
  4. Step 4: Simplify right side
    225,643.68x = 38,937,396,556.45
  5. Step 5: Solve for x
    x = 38,937,396,556.45/225,643.68
  6. Step 6: Final answer
    x = 172,561.43

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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.