Home / 279,937,984.40-419,906,976.60-221,487,347.60

Finding the Fourth Proportional to 279,937,984.40, 419,906,976.60 and 221,487,347.60

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Solution

The fourth proportional to 279,937,984.40, 419,906,976.60 and 221,487,347.60 is: 332,231,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,937,984.40 : 419,906,976.60 = 221,487,347.60 : x
  2. Step 2: Convert to fraction form
    279,937,984.40/419,906,976.60 = 221,487,347.60/x
  3. Step 3: Cross multiply
    279,937,984.40x = 419,906,976.60 × 221,487,347.60
  4. Step 4: Simplify right side
    279,937,984.40x = 93,004,082,485,869,264
  5. Step 5: Solve for x
    x = 93,004,082,485,869,264/279,937,984.40
  6. Step 6: Final answer
    x = 332,231,021.40

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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.