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Finding the Fourth Proportional to 279,660.90, 385,780.41 and 166,461.78

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Solution

The fourth proportional to 279,660.90, 385,780.41 and 166,461.78 is: 229,627.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,660.90 : 385,780.41 = 166,461.78 : x
  2. Step 2: Convert to fraction form
    279,660.90/385,780.41 = 166,461.78/x
  3. Step 3: Cross multiply
    279,660.90x = 385,780.41 × 166,461.78
  4. Step 4: Simplify right side
    279,660.90x = 64,217,693,737.73
  5. Step 5: Solve for x
    x = 64,217,693,737.73/279,660.90
  6. Step 6: Final answer
    x = 229,627.00

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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.