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Finding the Fourth Proportional to 805,540.80, 1,208,272.80 and 273,009.60

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Solution

The fourth proportional to 805,540.80, 1,208,272.80 and 273,009.60 is: 409,501.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,540.80 : 1,208,272.80 = 273,009.60 : x
  2. Step 2: Convert to fraction form
    805,540.80/1,208,272.80 = 273,009.60/x
  3. Step 3: Cross multiply
    805,540.80x = 1,208,272.80 × 273,009.60
  4. Step 4: Simplify right side
    805,540.80x = 329,870,073,818.88
  5. Step 5: Solve for x
    x = 329,870,073,818.88/805,540.80
  6. Step 6: Final answer
    x = 409,501.39

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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.