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Finding the Fourth Proportional to 331,679.46, 457,730.01 and 188,463.78

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Solution

The fourth proportional to 331,679.46, 457,730.01 and 188,463.78 is: 260,087.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,679.46 : 457,730.01 = 188,463.78 : x
  2. Step 2: Convert to fraction form
    331,679.46/457,730.01 = 188,463.78/x
  3. Step 3: Cross multiply
    331,679.46x = 457,730.01 × 188,463.78
  4. Step 4: Simplify right side
    331,679.46x = 86,265,527,904.04
  5. Step 5: Solve for x
    x = 86,265,527,904.04/331,679.46
  6. Step 6: Final answer
    x = 260,087.04

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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.