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Finding the Fourth Proportional to 485,593.37, 670,167.84 and 281,706.65

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Solution

The fourth proportional to 485,593.37, 670,167.84 and 281,706.65 is: 388,783.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,593.37 : 670,167.84 = 281,706.65 : x
  2. Step 2: Convert to fraction form
    485,593.37/670,167.84 = 281,706.65/x
  3. Step 3: Cross multiply
    485,593.37x = 670,167.84 × 281,706.65
  4. Step 4: Simplify right side
    485,593.37x = 188,790,733,793.30
  5. Step 5: Solve for x
    x = 188,790,733,793.30/485,593.37
  6. Step 6: Final answer
    x = 388,783.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.