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Finding the Third Proportional to 212,976,562 and 318,291,013

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Solution

The third proportional to 212,976,562 and 318,291,013 is: 475,682,244.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,976,562 : 318,291,013 = 318,291,013 : x
  2. Step 2: Convert to fraction form
    212,976,562/318,291,013 = 318,291,013/x
  3. Step 3: Cross multiply
    212,976,562x = 318,291,013 × 318,291,013
  4. Step 4: Simplify right side
    212,976,562x = 101,309,168,956,566,176
  5. Step 5: Solve for x
    x = 101,309,168,956,566,176/212,976,562
  6. Step 6: Final answer
    x = 475,682,244.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.