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Finding the Fourth Proportional to 247,035.15, 340,908.21 and 133,857.90

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Solution

The fourth proportional to 247,035.15, 340,908.21 and 133,857.90 is: 184,723.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,035.15 : 340,908.21 = 133,857.90 : x
  2. Step 2: Convert to fraction form
    247,035.15/340,908.21 = 133,857.90/x
  3. Step 3: Cross multiply
    247,035.15x = 340,908.21 × 133,857.90
  4. Step 4: Simplify right side
    247,035.15x = 45,633,257,083.36
  5. Step 5: Solve for x
    x = 45,633,257,083.36/247,035.15
  6. Step 6: Final answer
    x = 184,723.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.