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Finding the Fourth Proportional to 225,964.80, 311,817.60 and 123,969.60

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Solution

The fourth proportional to 225,964.80, 311,817.60 and 123,969.60 is: 171,070.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,964.80 : 311,817.60 = 123,969.60 : x
  2. Step 2: Convert to fraction form
    225,964.80/311,817.60 = 123,969.60/x
  3. Step 3: Cross multiply
    225,964.80x = 311,817.60 × 123,969.60
  4. Step 4: Simplify right side
    225,964.80x = 38,655,903,144.96
  5. Step 5: Solve for x
    x = 38,655,903,144.96/225,964.80
  6. Step 6: Final answer
    x = 171,070.46

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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.