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Finding the Fourth Proportional to 331,688.88, 457,725.58 and 186,494.79

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Solution

The fourth proportional to 331,688.88, 457,725.58 and 186,494.79 is: 257,359.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,688.88 : 457,725.58 = 186,494.79 : x
  2. Step 2: Convert to fraction form
    331,688.88/457,725.58 = 186,494.79/x
  3. Step 3: Cross multiply
    331,688.88x = 457,725.58 × 186,494.79
  4. Step 4: Simplify right side
    331,688.88x = 85,363,435,919.73
  5. Step 5: Solve for x
    x = 85,363,435,919.73/331,688.88
  6. Step 6: Final answer
    x = 257,359.96

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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.