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Finding the Fourth Proportional to 279,043,229.80, 418,564,844.70 and 218,510,698.60

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Solution

The fourth proportional to 279,043,229.80, 418,564,844.70 and 218,510,698.60 is: 327,766,047.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,043,229.80 : 418,564,844.70 = 218,510,698.60 : x
  2. Step 2: Convert to fraction form
    279,043,229.80/418,564,844.70 = 218,510,698.60/x
  3. Step 3: Cross multiply
    279,043,229.80x = 418,564,844.70 × 218,510,698.60
  4. Step 4: Simplify right side
    279,043,229.80x = 91,460,896,624,797,504
  5. Step 5: Solve for x
    x = 91,460,896,624,797,504/279,043,229.80
  6. Step 6: Final answer
    x = 327,766,047.90

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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.