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Finding the Fourth Proportional to 223,530.60, 308,396.70 and 126,724.08

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Solution

The fourth proportional to 223,530.60, 308,396.70 and 126,724.08 is: 174,836.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,530.60 : 308,396.70 = 126,724.08 : x
  2. Step 2: Convert to fraction form
    223,530.60/308,396.70 = 126,724.08/x
  3. Step 3: Cross multiply
    223,530.60x = 308,396.70 × 126,724.08
  4. Step 4: Simplify right side
    223,530.60x = 39,081,288,082.54
  5. Step 5: Solve for x
    x = 39,081,288,082.54/223,530.60
  6. Step 6: Final answer
    x = 174,836.41

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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.