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Finding the Fourth Proportional to 243,247.89, 364,891.28 and 85,511.73

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Solution

The fourth proportional to 243,247.89, 364,891.28 and 85,511.73 is: 128,274.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,247.89 : 364,891.28 = 85,511.73 : x
  2. Step 2: Convert to fraction form
    243,247.89/364,891.28 = 85,511.73/x
  3. Step 3: Cross multiply
    243,247.89x = 364,891.28 × 85,511.73
  4. Step 4: Simplify right side
    243,247.89x = 31,202,484,187.16
  5. Step 5: Solve for x
    x = 31,202,484,187.16/243,247.89
  6. Step 6: Final answer
    x = 128,274.43

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1.5x scale

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.