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Finding the Fourth Proportional to 222,730, 307,367.42 and 122,130.16

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Solution

The fourth proportional to 222,730, 307,367.42 and 122,130.16 is: 168,539.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,730 : 307,367.42 = 122,130.16 : x
  2. Step 2: Convert to fraction form
    222,730/307,367.42 = 122,130.16/x
  3. Step 3: Cross multiply
    222,730x = 307,367.42 × 122,130.16
  4. Step 4: Simplify right side
    222,730x = 37,538,832,183.39
  5. Step 5: Solve for x
    x = 37,538,832,183.39/222,730
  6. Step 6: Final answer
    x = 168,539.63

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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.