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Finding the Fourth Proportional to 279,604.80, 385,907.76 and 166,489.92

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Solution

The fourth proportional to 279,604.80, 385,907.76 and 166,489.92 is: 229,787.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,604.80 : 385,907.76 = 166,489.92 : x
  2. Step 2: Convert to fraction form
    279,604.80/385,907.76 = 166,489.92/x
  3. Step 3: Cross multiply
    279,604.80x = 385,907.76 × 166,489.92
  4. Step 4: Simplify right side
    279,604.80x = 64,249,752,089.78
  5. Step 5: Solve for x
    x = 64,249,752,089.78/279,604.80
  6. Step 6: Final answer
    x = 229,787.73

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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.