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Finding the Third Proportional to 321,930,198 and 697,342,288.50

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Solution

The third proportional to 321,930,198 and 697,342,288.50 is: 1,510,533,247.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,930,198 : 697,342,288.50 = 697,342,288.50 : x
  2. Step 2: Convert to fraction form
    321,930,198/697,342,288.50 = 697,342,288.50/x
  3. Step 3: Cross multiply
    321,930,198x = 697,342,288.50 × 697,342,288.50
  4. Step 4: Simplify right side
    321,930,198x = 486,286,267,330,417,216
  5. Step 5: Solve for x
    x = 486,286,267,330,417,216/321,930,198
  6. Step 6: Final answer
    x = 1,510,533,247.12

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.