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Finding the Third Proportional to 172,403,556 and 258,352,508

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Solution

The third proportional to 172,403,556 and 258,352,508 is: 387,149,893.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,403,556 : 258,352,508 = 258,352,508 : x
  2. Step 2: Convert to fraction form
    172,403,556/258,352,508 = 258,352,508/x
  3. Step 3: Cross multiply
    172,403,556x = 258,352,508 × 258,352,508
  4. Step 4: Simplify right side
    172,403,556x = 66,746,018,389,890,064
  5. Step 5: Solve for x
    x = 66,746,018,389,890,064/172,403,556
  6. Step 6: Final answer
    x = 387,149,893.76

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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.