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Finding the Fourth Proportional to 331,679.59, 457,730.18 and 188,463.91

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Solution

The fourth proportional to 331,679.59, 457,730.18 and 188,463.91 is: 260,087.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,679.59 : 457,730.18 = 188,463.91 : x
  2. Step 2: Convert to fraction form
    331,679.59/457,730.18 = 188,463.91/x
  3. Step 3: Cross multiply
    331,679.59x = 457,730.18 × 188,463.91
  4. Step 4: Simplify right side
    331,679.59x = 86,265,617,630.31
  5. Step 5: Solve for x
    x = 86,265,617,630.31/331,679.59
  6. Step 6: Final answer
    x = 260,087.21

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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.