Home / 280,034,964.40-420,052,446.60-75,562,711.60

Finding the Fourth Proportional to 280,034,964.40, 420,052,446.60 and 75,562,711.60

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Solution

The fourth proportional to 280,034,964.40, 420,052,446.60 and 75,562,711.60 is: 113,344,067.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,034,964.40 : 420,052,446.60 = 75,562,711.60 : x
  2. Step 2: Convert to fraction form
    280,034,964.40/420,052,446.60 = 75,562,711.60/x
  3. Step 3: Cross multiply
    280,034,964.40x = 420,052,446.60 × 75,562,711.60
  4. Step 4: Simplify right side
    280,034,964.40x = 31,740,301,879,310,200
  5. Step 5: Solve for x
    x = 31,740,301,879,310,200/280,034,964.40
  6. Step 6: Final answer
    x = 113,344,067.40

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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.