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Finding the Fourth Proportional to 617,995.98, 927,409.50 and 218,635.20

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Solution

The fourth proportional to 617,995.98, 927,409.50 and 218,635.20 is: 328,099.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,995.98 : 927,409.50 = 218,635.20 : x
  2. Step 2: Convert to fraction form
    617,995.98/927,409.50 = 218,635.20/x
  3. Step 3: Cross multiply
    617,995.98x = 927,409.50 × 218,635.20
  4. Step 4: Simplify right side
    617,995.98x = 202,764,361,514.40
  5. Step 5: Solve for x
    x = 202,764,361,514.40/617,995.98
  6. Step 6: Final answer
    x = 328,099.81

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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.