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Finding the Fourth Proportional to 204,405.03, 306,607.63 and 91,953.90

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Solution

The fourth proportional to 204,405.03, 306,607.63 and 91,953.90 is: 137,930.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,405.03 : 306,607.63 = 91,953.90 : x
  2. Step 2: Convert to fraction form
    204,405.03/306,607.63 = 91,953.90/x
  3. Step 3: Cross multiply
    204,405.03x = 306,607.63 × 91,953.90
  4. Step 4: Simplify right side
    204,405.03x = 28,193,767,348.26
  5. Step 5: Solve for x
    x = 28,193,767,348.26/204,405.03
  6. Step 6: Final answer
    x = 137,930.89

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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.