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Finding the Fourth Proportional to 222,492.06, 307,035.99 and 121,890.78

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Solution

The fourth proportional to 222,492.06, 307,035.99 and 121,890.78 is: 168,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,492.06 : 307,035.99 = 121,890.78 : x
  2. Step 2: Convert to fraction form
    222,492.06/307,035.99 = 121,890.78/x
  3. Step 3: Cross multiply
    222,492.06x = 307,035.99 × 121,890.78
  4. Step 4: Simplify right side
    222,492.06x = 37,424,856,309.17
  5. Step 5: Solve for x
    x = 37,424,856,309.17/222,492.06
  6. Step 6: Final answer
    x = 168,207.60

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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.