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Finding the Third Proportional to 317,817 and 505,885.50

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Solution

The third proportional to 317,817 and 505,885.50 is: 805,243.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,817 : 505,885.50 = 505,885.50 : x
  2. Step 2: Convert to fraction form
    317,817/505,885.50 = 505,885.50/x
  3. Step 3: Cross multiply
    317,817x = 505,885.50 × 505,885.50
  4. Step 4: Simplify right side
    317,817x = 255,920,139,110.25
  5. Step 5: Solve for x
    x = 255,920,139,110.25/317,817
  6. Step 6: Final answer
    x = 805,243.71

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.