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Finding the Third Proportional to 172,273,680 and 258,536,516

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Solution

The third proportional to 172,273,680 and 258,536,516 is: 387,993,860.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,273,680 : 258,536,516 = 258,536,516 : x
  2. Step 2: Convert to fraction form
    172,273,680/258,536,516 = 258,536,516/x
  3. Step 3: Cross multiply
    172,273,680x = 258,536,516 × 258,536,516
  4. Step 4: Simplify right side
    172,273,680x = 66,841,130,105,418,256
  5. Step 5: Solve for x
    x = 66,841,130,105,418,256/172,273,680
  6. Step 6: Final answer
    x = 387,993,860.15

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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.