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Finding the Third Proportional to 128,156,650.50 and 279,598,851

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Solution

The third proportional to 128,156,650.50 and 279,598,851 is: 609,999,693.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,156,650.50 : 279,598,851 = 279,598,851 : x
  2. Step 2: Convert to fraction form
    128,156,650.50/279,598,851 = 279,598,851/x
  3. Step 3: Cross multiply
    128,156,650.50x = 279,598,851 × 279,598,851
  4. Step 4: Simplify right side
    128,156,650.50x = 78,175,517,480,520,208
  5. Step 5: Solve for x
    x = 78,175,517,480,520,208/128,156,650.50
  6. Step 6: Final answer
    x = 609,999,693.15

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.