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Finding the Fourth Proportional to 205,978.08, 308,769.48 and 65,645.04

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Solution

The fourth proportional to 205,978.08, 308,769.48 and 65,645.04 is: 98,404.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,978.08 : 308,769.48 = 65,645.04 : x
  2. Step 2: Convert to fraction form
    205,978.08/308,769.48 = 65,645.04/x
  3. Step 3: Cross multiply
    205,978.08x = 308,769.48 × 65,645.04
  4. Step 4: Simplify right side
    205,978.08x = 20,269,184,865.38
  5. Step 5: Solve for x
    x = 20,269,184,865.38/205,978.08
  6. Step 6: Final answer
    x = 98,404.57

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.