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Finding the Fourth Proportional to 329,109.80, 492,789.90 and 329,109.80

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Solution

The fourth proportional to 329,109.80, 492,789.90 and 329,109.80 is: 492,789.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,109.80 : 492,789.90 = 329,109.80 : x
  2. Step 2: Convert to fraction form
    329,109.80/492,789.90 = 329,109.80/x
  3. Step 3: Cross multiply
    329,109.80x = 492,789.90 × 329,109.80
  4. Step 4: Simplify right side
    329,109.80x = 162,181,985,431.02
  5. Step 5: Solve for x
    x = 162,181,985,431.02/329,109.80
  6. Step 6: Final answer
    x = 492,789.90

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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.