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Finding the Fourth Proportional to 222,411.44, 306,930.84 and 121,810.16

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Solution

The fourth proportional to 222,411.44, 306,930.84 and 121,810.16 is: 168,099.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,411.44 : 306,930.84 = 121,810.16 : x
  2. Step 2: Convert to fraction form
    222,411.44/306,930.84 = 121,810.16/x
  3. Step 3: Cross multiply
    222,411.44x = 306,930.84 × 121,810.16
  4. Step 4: Simplify right side
    222,411.44x = 37,387,294,729.33
  5. Step 5: Solve for x
    x = 37,387,294,729.33/222,411.44
  6. Step 6: Final answer
    x = 168,099.69

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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.