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Finding the Third Proportional to 155,918 and 330,239.50

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Solution

The third proportional to 155,918 and 330,239.50 is: 699,458.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,918 : 330,239.50 = 330,239.50 : x
  2. Step 2: Convert to fraction form
    155,918/330,239.50 = 330,239.50/x
  3. Step 3: Cross multiply
    155,918x = 330,239.50 × 330,239.50
  4. Step 4: Simplify right side
    155,918x = 109,058,127,360.25
  5. Step 5: Solve for x
    x = 109,058,127,360.25/155,918
  6. Step 6: Final answer
    x = 699,458.22

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.