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Finding the Fourth Proportional to 223,230.80, 308,107.25 and 137,263.76

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Solution

The fourth proportional to 223,230.80, 308,107.25 and 137,263.76 is: 189,453.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,230.80 : 308,107.25 = 137,263.76 : x
  2. Step 2: Convert to fraction form
    223,230.80/308,107.25 = 137,263.76/x
  3. Step 3: Cross multiply
    223,230.80x = 308,107.25 × 137,263.76
  4. Step 4: Simplify right side
    223,230.80x = 42,291,958,504.83
  5. Step 5: Solve for x
    x = 42,291,958,504.83/223,230.80
  6. Step 6: Final answer
    x = 189,453.96

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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.