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Finding the Third Proportional to 172,291,000 and 260,487,872

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Solution

The third proportional to 172,291,000 and 260,487,872 is: 393,833,290.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,291,000 : 260,487,872 = 260,487,872 : x
  2. Step 2: Convert to fraction form
    172,291,000/260,487,872 = 260,487,872/x
  3. Step 3: Cross multiply
    172,291,000x = 260,487,872 × 260,487,872
  4. Step 4: Simplify right side
    172,291,000x = 67,853,931,459,088,384
  5. Step 5: Solve for x
    x = 67,853,931,459,088,384/172,291,000
  6. Step 6: Final answer
    x = 393,833,290.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.