Home / 280,034,961.40-420,052,442.10-75,562,708.60

Finding the Fourth Proportional to 280,034,961.40, 420,052,442.10 and 75,562,708.60

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Solution

The fourth proportional to 280,034,961.40, 420,052,442.10 and 75,562,708.60 is: 113,344,062.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,034,961.40 : 420,052,442.10 = 75,562,708.60 : x
  2. Step 2: Convert to fraction form
    280,034,961.40/420,052,442.10 = 75,562,708.60/x
  3. Step 3: Cross multiply
    280,034,961.40x = 420,052,442.10 × 75,562,708.60
  4. Step 4: Simplify right side
    280,034,961.40x = 31,740,300,279,120,672
  5. Step 5: Solve for x
    x = 31,740,300,279,120,672/280,034,961.40
  6. Step 6: Final answer
    x = 113,344,062.90

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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.