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Finding the Fourth Proportional to 225,571.48, 311,276.34 and 123,578.20

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Solution

The fourth proportional to 225,571.48, 311,276.34 and 123,578.20 is: 170,531.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,571.48 : 311,276.34 = 123,578.20 : x
  2. Step 2: Convert to fraction form
    225,571.48/311,276.34 = 123,578.20/x
  3. Step 3: Cross multiply
    225,571.48x = 311,276.34 × 123,578.20
  4. Step 4: Simplify right side
    225,571.48x = 38,466,969,799.79
  5. Step 5: Solve for x
    x = 38,466,969,799.79/225,571.48
  6. Step 6: Final answer
    x = 170,531.18

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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.