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Finding the Fourth Proportional to 223,005.62, 307,322.78 and 218,906.48

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Solution

The fourth proportional to 223,005.62, 307,322.78 and 218,906.48 is: 301,673.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,005.62 : 307,322.78 = 218,906.48 : x
  2. Step 2: Convert to fraction form
    223,005.62/307,322.78 = 218,906.48/x
  3. Step 3: Cross multiply
    223,005.62x = 307,322.78 × 218,906.48
  4. Step 4: Simplify right side
    223,005.62x = 67,274,947,993.61
  5. Step 5: Solve for x
    x = 67,274,947,993.61/223,005.62
  6. Step 6: Final answer
    x = 301,673.78

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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.