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Finding the Third Proportional to 209,078 and 314,088

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Solution

The third proportional to 209,078 and 314,088 is: 471,839.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,078 : 314,088 = 314,088 : x
  2. Step 2: Convert to fraction form
    209,078/314,088 = 314,088/x
  3. Step 3: Cross multiply
    209,078x = 314,088 × 314,088
  4. Step 4: Simplify right side
    209,078x = 98,651,271,744
  5. Step 5: Solve for x
    x = 98,651,271,744/209,078
  6. Step 6: Final answer
    x = 471,839.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.