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Finding the Third Proportional to 153,009 and 331,437

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Solution

The third proportional to 153,009 and 331,437 is: 717,934.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,009 : 331,437 = 331,437 : x
  2. Step 2: Convert to fraction form
    153,009/331,437 = 331,437/x
  3. Step 3: Cross multiply
    153,009x = 331,437 × 331,437
  4. Step 4: Simplify right side
    153,009x = 109,850,484,969
  5. Step 5: Solve for x
    x = 109,850,484,969/153,009
  6. Step 6: Final answer
    x = 717,934.79

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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.