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Finding the Third Proportional to 139,793,080 and 218,816,149

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Solution

The third proportional to 139,793,080 and 218,816,149 is: 342,509,851.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,793,080 : 218,816,149 = 218,816,149 : x
  2. Step 2: Convert to fraction form
    139,793,080/218,816,149 = 218,816,149/x
  3. Step 3: Cross multiply
    139,793,080x = 218,816,149 × 218,816,149
  4. Step 4: Simplify right side
    139,793,080x = 47,880,507,063,190,200
  5. Step 5: Solve for x
    x = 47,880,507,063,190,200/139,793,080
  6. Step 6: Final answer
    x = 342,509,851.44

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.