Home / 280,034,957.40-420,052,436.10-75,562,704.60

Finding the Fourth Proportional to 280,034,957.40, 420,052,436.10 and 75,562,704.60

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Solution

The fourth proportional to 280,034,957.40, 420,052,436.10 and 75,562,704.60 is: 113,344,056.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,034,957.40 : 420,052,436.10 = 75,562,704.60 : x
  2. Step 2: Convert to fraction form
    280,034,957.40/420,052,436.10 = 75,562,704.60/x
  3. Step 3: Cross multiply
    280,034,957.40x = 420,052,436.10 × 75,562,704.60
  4. Step 4: Simplify right side
    280,034,957.40x = 31,740,298,145,534,676
  5. Step 5: Solve for x
    x = 31,740,298,145,534,676/280,034,957.40
  6. Step 6: Final answer
    x = 113,344,056.90

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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.