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Finding the Fourth Proportional to 225,230.55, 310,815.45 and 123,255.66

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Solution

The fourth proportional to 225,230.55, 310,815.45 and 123,255.66 is: 170,091.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,230.55 : 310,815.45 = 123,255.66 : x
  2. Step 2: Convert to fraction form
    225,230.55/310,815.45 = 123,255.66/x
  3. Step 3: Cross multiply
    225,230.55x = 310,815.45 × 123,255.66
  4. Step 4: Simplify right side
    225,230.55x = 38,309,763,427.95
  5. Step 5: Solve for x
    x = 38,309,763,427.95/225,230.55
  6. Step 6: Final answer
    x = 170,091.33

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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.