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Finding the Fourth Proportional to 222,003.16, 306,358.12 and 121,399

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Solution

The fourth proportional to 222,003.16, 306,358.12 and 121,399 is: 167,527.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,003.16 : 306,358.12 = 121,399 : x
  2. Step 2: Convert to fraction form
    222,003.16/306,358.12 = 121,399/x
  3. Step 3: Cross multiply
    222,003.16x = 306,358.12 × 121,399
  4. Step 4: Simplify right side
    222,003.16x = 37,191,569,409.88
  5. Step 5: Solve for x
    x = 37,191,569,409.88/222,003.16
  6. Step 6: Final answer
    x = 167,527.21

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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.