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Finding the Third Proportional to 145,908 and 312,066

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Solution

The third proportional to 145,908 and 312,066 is: 667,442.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,908 : 312,066 = 312,066 : x
  2. Step 2: Convert to fraction form
    145,908/312,066 = 312,066/x
  3. Step 3: Cross multiply
    145,908x = 312,066 × 312,066
  4. Step 4: Simplify right side
    145,908x = 97,385,188,356
  5. Step 5: Solve for x
    x = 97,385,188,356/145,908
  6. Step 6: Final answer
    x = 667,442.42

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.