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Finding the Third Proportional to 258,609,158 and 387,535,442

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Solution

The third proportional to 258,609,158 and 387,535,442 is: 580,736,273.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,609,158 : 387,535,442 = 387,535,442 : x
  2. Step 2: Convert to fraction form
    258,609,158/387,535,442 = 387,535,442/x
  3. Step 3: Cross multiply
    258,609,158x = 387,535,442 × 387,535,442
  4. Step 4: Simplify right side
    258,609,158x = 150,183,718,806,135,360
  5. Step 5: Solve for x
    x = 150,183,718,806,135,360/258,609,158
  6. Step 6: Final answer
    x = 580,736,273.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.