Home / 279,936,295.40-419,904,443.10-221,485,658.60

Finding the Fourth Proportional to 279,936,295.40, 419,904,443.10 and 221,485,658.60

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Solution

The fourth proportional to 279,936,295.40, 419,904,443.10 and 221,485,658.60 is: 332,228,487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,295.40 : 419,904,443.10 = 221,485,658.60 : x
  2. Step 2: Convert to fraction form
    279,936,295.40/419,904,443.10 = 221,485,658.60/x
  3. Step 3: Cross multiply
    279,936,295.40x = 419,904,443.10 × 221,485,658.60
  4. Step 4: Simplify right side
    279,936,295.40x = 93,002,812,129,069,728
  5. Step 5: Solve for x
    x = 93,002,812,129,069,728/279,936,295.40
  6. Step 6: Final answer
    x = 332,228,487.90

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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.