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Finding the Fourth Proportional to 225,955.41, 311,808.03 and 123,978.33

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Solution

The fourth proportional to 225,955.41, 311,808.03 and 123,978.33 is: 171,084.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,955.41 : 311,808.03 = 123,978.33 : x
  2. Step 2: Convert to fraction form
    225,955.41/311,808.03 = 123,978.33/x
  3. Step 3: Cross multiply
    225,955.41x = 311,808.03 × 123,978.33
  4. Step 4: Simplify right side
    225,955.41x = 38,657,438,839.99
  5. Step 5: Solve for x
    x = 38,657,438,839.99/225,955.41
  6. Step 6: Final answer
    x = 171,084.37

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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.