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Finding the Fourth Proportional to 225,513.59, 311,208.89 and 123,542.74

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Solution

The fourth proportional to 225,513.59, 311,208.89 and 123,542.74 is: 170,489.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,513.59 : 311,208.89 = 123,542.74 : x
  2. Step 2: Convert to fraction form
    225,513.59/311,208.89 = 123,542.74/x
  3. Step 3: Cross multiply
    225,513.59x = 311,208.89 × 123,542.74
  4. Step 4: Simplify right side
    225,513.59x = 38,447,599,629.53
  5. Step 5: Solve for x
    x = 38,447,599,629.53/225,513.59
  6. Step 6: Final answer
    x = 170,489.06

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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.