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Finding the Fourth Proportional to 279,486,028.10, 419,229,042.15 and 279,486,028.10

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Solution

The fourth proportional to 279,486,028.10, 419,229,042.15 and 279,486,028.10 is: 419,229,042.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,486,028.10 : 419,229,042.15 = 279,486,028.10 : x
  2. Step 2: Convert to fraction form
    279,486,028.10/419,229,042.15 = 279,486,028.10/x
  3. Step 3: Cross multiply
    279,486,028.10x = 419,229,042.15 × 279,486,028.10
  4. Step 4: Simplify right side
    279,486,028.10x = 117,168,659,854,670,992
  5. Step 5: Solve for x
    x = 117,168,659,854,670,992/279,486,028.10
  6. Step 6: Final answer
    x = 419,229,042.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.