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Finding the Third Proportional to 155,315.63 and 339,709.88

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Solution

The third proportional to 155,315.63 and 339,709.88 is: 743,021.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,315.63 : 339,709.88 = 339,709.88 : x
  2. Step 2: Convert to fraction form
    155,315.63/339,709.88 = 339,709.88/x
  3. Step 3: Cross multiply
    155,315.63x = 339,709.88 × 339,709.88
  4. Step 4: Simplify right side
    155,315.63x = 115,402,799,172.52
  5. Step 5: Solve for x
    x = 115,402,799,172.52/155,315.63
  6. Step 6: Final answer
    x = 743,021.18

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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.