Home / 280,410,098.57-420,239,172.11-218,236,487.23

Finding the Fourth Proportional to 280,410,098.57, 420,239,172.11 and 218,236,487.23

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Solution

The fourth proportional to 280,410,098.57, 420,239,172.11 and 218,236,487.23 is: 327,062,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,410,098.57 : 420,239,172.11 = 218,236,487.23 : x
  2. Step 2: Convert to fraction form
    280,410,098.57/420,239,172.11 = 218,236,487.23/x
  3. Step 3: Cross multiply
    280,410,098.57x = 420,239,172.11 × 218,236,487.23
  4. Step 4: Simplify right side
    280,410,098.57x = 91,711,520,717,729,792
  5. Step 5: Solve for x
    x = 91,711,520,717,729,792/280,410,098.57
  6. Step 6: Final answer
    x = 327,062,117.90

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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.