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Finding the Fourth Proportional to 207,329.02, 310,978.94 and 80,945.52

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Solution

The fourth proportional to 207,329.02, 310,978.94 and 80,945.52 is: 121,412.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,329.02 : 310,978.94 = 80,945.52 : x
  2. Step 2: Convert to fraction form
    207,329.02/310,978.94 = 80,945.52/x
  3. Step 3: Cross multiply
    207,329.02x = 310,978.94 × 80,945.52
  4. Step 4: Simplify right side
    207,329.02x = 25,172,352,007.35
  5. Step 5: Solve for x
    x = 25,172,352,007.35/207,329.02
  6. Step 6: Final answer
    x = 121,412.58

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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.