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Finding the Third Proportional to 155,439 and 340,038

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Solution

The third proportional to 155,439 and 340,038 is: 743,866.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,439 : 340,038 = 340,038 : x
  2. Step 2: Convert to fraction form
    155,439/340,038 = 340,038/x
  3. Step 3: Cross multiply
    155,439x = 340,038 × 340,038
  4. Step 4: Simplify right side
    155,439x = 115,625,841,444
  5. Step 5: Solve for x
    x = 115,625,841,444/155,439
  6. Step 6: Final answer
    x = 743,866.35

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.