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Finding the Fourth Proportional to 222,376, 306,885.36 and 121,780.48

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Solution

The fourth proportional to 222,376, 306,885.36 and 121,780.48 is: 168,060.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,376 : 306,885.36 = 121,780.48 : x
  2. Step 2: Convert to fraction form
    222,376/306,885.36 = 121,780.48/x
  3. Step 3: Cross multiply
    222,376x = 306,885.36 × 121,780.48
  4. Step 4: Simplify right side
    222,376x = 37,372,646,445.77
  5. Step 5: Solve for x
    x = 37,372,646,445.77/222,376
  6. Step 6: Final answer
    x = 168,060.61

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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.