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Finding the Third Proportional to 316,980 and 464,090.34

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Solution

The third proportional to 316,980 and 464,090.34 is: 679,474.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,980 : 464,090.34 = 464,090.34 : x
  2. Step 2: Convert to fraction form
    316,980/464,090.34 = 464,090.34/x
  3. Step 3: Cross multiply
    316,980x = 464,090.34 × 464,090.34
  4. Step 4: Simplify right side
    316,980x = 215,379,847,161.99
  5. Step 5: Solve for x
    x = 215,379,847,161.99/316,980
  6. Step 6: Final answer
    x = 679,474.56

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.