Home / 455,338.20-683,007.30-218,623.80

Finding the Fourth Proportional to 455,338.20, 683,007.30 and 218,623.80

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Solution

The fourth proportional to 455,338.20, 683,007.30 and 218,623.80 is: 327,935.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,338.20 : 683,007.30 = 218,623.80 : x
  2. Step 2: Convert to fraction form
    455,338.20/683,007.30 = 218,623.80/x
  3. Step 3: Cross multiply
    455,338.20x = 683,007.30 × 218,623.80
  4. Step 4: Simplify right side
    455,338.20x = 149,321,651,353.74
  5. Step 5: Solve for x
    x = 149,321,651,353.74/455,338.20
  6. Step 6: Final answer
    x = 327,935.70

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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.