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Finding the Third Proportional to 155,359.50 and 336,639

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Solution

The third proportional to 155,359.50 and 336,639 is: 729,442.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,359.50 : 336,639 = 336,639 : x
  2. Step 2: Convert to fraction form
    155,359.50/336,639 = 336,639/x
  3. Step 3: Cross multiply
    155,359.50x = 336,639 × 336,639
  4. Step 4: Simplify right side
    155,359.50x = 113,325,816,321
  5. Step 5: Solve for x
    x = 113,325,816,321/155,359.50
  6. Step 6: Final answer
    x = 729,442.46

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.