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Finding the Third Proportional to 10,308,090 and 20,355,987

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Solution

The third proportional to 10,308,090 and 20,355,987 is: 40,198,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,308,090 : 20,355,987 = 20,355,987 : x
  2. Step 2: Convert to fraction form
    10,308,090/20,355,987 = 20,355,987/x
  3. Step 3: Cross multiply
    10,308,090x = 20,355,987 × 20,355,987
  4. Step 4: Simplify right side
    10,308,090x = 414,366,206,744,169
  5. Step 5: Solve for x
    x = 414,366,206,744,169/10,308,090
  6. Step 6: Final answer
    x = 40,198,155.70

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.