Home / 279,936,310.40-419,904,465.60-239,121,641.60

Finding the Fourth Proportional to 279,936,310.40, 419,904,465.60 and 239,121,641.60

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Solution

The fourth proportional to 279,936,310.40, 419,904,465.60 and 239,121,641.60 is: 358,682,462.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,310.40 : 419,904,465.60 = 239,121,641.60 : x
  2. Step 2: Convert to fraction form
    279,936,310.40/419,904,465.60 = 239,121,641.60/x
  3. Step 3: Cross multiply
    279,936,310.40x = 419,904,465.60 × 239,121,641.60
  4. Step 4: Simplify right side
    279,936,310.40x = 100,408,245,129,442,736
  5. Step 5: Solve for x
    x = 100,408,245,129,442,736/279,936,310.40
  6. Step 6: Final answer
    x = 358,682,462.40

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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.