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Finding the Third Proportional to 156,786,358 and 243,750,390

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Solution

The third proportional to 156,786,358 and 243,750,390 is: 378,950,397.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,786,358 : 243,750,390 = 243,750,390 : x
  2. Step 2: Convert to fraction form
    156,786,358/243,750,390 = 243,750,390/x
  3. Step 3: Cross multiply
    156,786,358x = 243,750,390 × 243,750,390
  4. Step 4: Simplify right side
    156,786,358x = 59,414,252,625,152,096
  5. Step 5: Solve for x
    x = 59,414,252,625,152,096/156,786,358
  6. Step 6: Final answer
    x = 378,950,397.11

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.