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Finding the Third Proportional to 153,955 and 330,830

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Solution

The third proportional to 153,955 and 330,830 is: 710,912.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,955 : 330,830 = 330,830 : x
  2. Step 2: Convert to fraction form
    153,955/330,830 = 330,830/x
  3. Step 3: Cross multiply
    153,955x = 330,830 × 330,830
  4. Step 4: Simplify right side
    153,955x = 109,448,488,900
  5. Step 5: Solve for x
    x = 109,448,488,900/153,955
  6. Step 6: Final answer
    x = 710,912.21

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.