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Finding the Fourth Proportional to 225,485.89, 311,174.98 and 123,511.34

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Solution

The fourth proportional to 225,485.89, 311,174.98 and 123,511.34 is: 170,448.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,485.89 : 311,174.98 = 123,511.34 : x
  2. Step 2: Convert to fraction form
    225,485.89/311,174.98 = 123,511.34/x
  3. Step 3: Cross multiply
    225,485.89x = 311,174.98 × 123,511.34
  4. Step 4: Simplify right side
    225,485.89x = 38,433,639,223.43
  5. Step 5: Solve for x
    x = 38,433,639,223.43/225,485.89
  6. Step 6: Final answer
    x = 170,448.09

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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.