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Finding the Third Proportional to 209,747,666 and 317,535,987

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Solution

The third proportional to 209,747,666 and 317,535,987 is: 480,716,209.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,747,666 : 317,535,987 = 317,535,987 : x
  2. Step 2: Convert to fraction form
    209,747,666/317,535,987 = 317,535,987/x
  3. Step 3: Cross multiply
    209,747,666x = 317,535,987 × 317,535,987
  4. Step 4: Simplify right side
    209,747,666x = 100,829,103,040,064,176
  5. Step 5: Solve for x
    x = 100,829,103,040,064,176/209,747,666
  6. Step 6: Final answer
    x = 480,716,209.92

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.