Home / 279,568,911.60-419,185,405.80-143,520,015.60

Finding the Fourth Proportional to 279,568,911.60, 419,185,405.80 and 143,520,015.60

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Solution

The fourth proportional to 279,568,911.60, 419,185,405.80 and 143,520,015.60 is: 215,193,798.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,568,911.60 : 419,185,405.80 = 143,520,015.60 : x
  2. Step 2: Convert to fraction form
    279,568,911.60/419,185,405.80 = 143,520,015.60/x
  3. Step 3: Cross multiply
    279,568,911.60x = 419,185,405.80 × 143,520,015.60
  4. Step 4: Simplify right side
    279,568,911.60x = 60,161,495,979,708,328
  5. Step 5: Solve for x
    x = 60,161,495,979,708,328/279,568,911.60
  6. Step 6: Final answer
    x = 215,193,798.32

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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.