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Finding the Fourth Proportional to 222,360.59, 306,860.09 and 120,388.28

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Solution

The fourth proportional to 222,360.59, 306,860.09 and 120,388.28 is: 166,137.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,360.59 : 306,860.09 = 120,388.28 : x
  2. Step 2: Convert to fraction form
    222,360.59/306,860.09 = 120,388.28/x
  3. Step 3: Cross multiply
    222,360.59x = 306,860.09 × 120,388.28
  4. Step 4: Simplify right side
    222,360.59x = 36,942,356,299.50
  5. Step 5: Solve for x
    x = 36,942,356,299.50/222,360.59
  6. Step 6: Final answer
    x = 166,137.16

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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.