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Finding the Fourth Proportional to 222,452.76, 306,981.90 and 121,851.48

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Solution

The fourth proportional to 222,452.76, 306,981.90 and 121,851.48 is: 168,153.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,452.76 : 306,981.90 = 121,851.48 : x
  2. Step 2: Convert to fraction form
    222,452.76/306,981.90 = 121,851.48/x
  3. Step 3: Cross multiply
    222,452.76x = 306,981.90 × 121,851.48
  4. Step 4: Simplify right side
    222,452.76x = 37,406,198,848.21
  5. Step 5: Solve for x
    x = 37,406,198,848.21/222,452.76
  6. Step 6: Final answer
    x = 168,153.45

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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.