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Finding the Fourth Proportional to 331,728.67, 457,783.17 and 188,488.71

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Solution

The fourth proportional to 331,728.67, 457,783.17 and 188,488.71 is: 260,113.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,728.67 : 457,783.17 = 188,488.71 : x
  2. Step 2: Convert to fraction form
    331,728.67/457,783.17 = 188,488.71/x
  3. Step 3: Cross multiply
    331,728.67x = 457,783.17 × 188,488.71
  4. Step 4: Simplify right side
    331,728.67x = 86,286,958,466.18
  5. Step 5: Solve for x
    x = 86,286,958,466.18/331,728.67
  6. Step 6: Final answer
    x = 260,113.06

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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.