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Finding the Fourth Proportional to 485,356.60, 727,775.70 and 204,556.60

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Solution

The fourth proportional to 485,356.60, 727,775.70 and 204,556.60 is: 306,725.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,356.60 : 727,775.70 = 204,556.60 : x
  2. Step 2: Convert to fraction form
    485,356.60/727,775.70 = 204,556.60/x
  3. Step 3: Cross multiply
    485,356.60x = 727,775.70 × 204,556.60
  4. Step 4: Simplify right side
    485,356.60x = 148,871,322,754.62
  5. Step 5: Solve for x
    x = 148,871,322,754.62/485,356.60
  6. Step 6: Final answer
    x = 306,725.66

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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.