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Finding the Fourth Proportional to 222,561.98, 307,125.51 and 121,957.82

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Solution

The fourth proportional to 222,561.98, 307,125.51 and 121,957.82 is: 168,296.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,561.98 : 307,125.51 = 121,957.82 : x
  2. Step 2: Convert to fraction form
    222,561.98/307,125.51 = 121,957.82/x
  3. Step 3: Cross multiply
    222,561.98x = 307,125.51 × 121,957.82
  4. Step 4: Simplify right side
    222,561.98x = 37,456,357,665.99
  5. Step 5: Solve for x
    x = 37,456,357,665.99/222,561.98
  6. Step 6: Final answer
    x = 168,296.30

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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.