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Finding the Fourth Proportional to 222,237, 306,687.06 and 121,635

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Solution

The fourth proportional to 222,237, 306,687.06 and 121,635 is: 167,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,237 : 306,687.06 = 121,635 : x
  2. Step 2: Convert to fraction form
    222,237/306,687.06 = 121,635/x
  3. Step 3: Cross multiply
    222,237x = 306,687.06 × 121,635
  4. Step 4: Simplify right side
    222,237x = 37,303,880,543.10
  5. Step 5: Solve for x
    x = 37,303,880,543.10/222,237
  6. Step 6: Final answer
    x = 167,856.30

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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.