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Finding the Third Proportional to 172,679,709 and 265,689,042

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Solution

The third proportional to 172,679,709 and 265,689,042 is: 408,795,378.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,679,709 : 265,689,042 = 265,689,042 : x
  2. Step 2: Convert to fraction form
    172,679,709/265,689,042 = 265,689,042/x
  3. Step 3: Cross multiply
    172,679,709x = 265,689,042 × 265,689,042
  4. Step 4: Simplify right side
    172,679,709x = 70,590,667,038,877,760
  5. Step 5: Solve for x
    x = 70,590,667,038,877,760/172,679,709
  6. Step 6: Final answer
    x = 408,795,378.73

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These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.