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Finding the Fourth Proportional to 331,603, 457,612.20 and 180,700

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Solution

The fourth proportional to 331,603, 457,612.20 and 180,700 is: 249,366.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,603 : 457,612.20 = 180,700 : x
  2. Step 2: Convert to fraction form
    331,603/457,612.20 = 180,700/x
  3. Step 3: Cross multiply
    331,603x = 457,612.20 × 180,700
  4. Step 4: Simplify right side
    331,603x = 82,690,524,540
  5. Step 5: Solve for x
    x = 82,690,524,540/331,603
  6. Step 6: Final answer
    x = 249,366.03

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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.