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Finding the Fourth Proportional to 247,399.54, 341,412.84 and 139,992.02

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Solution

The fourth proportional to 247,399.54, 341,412.84 and 139,992.02 is: 193,189.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,399.54 : 341,412.84 = 139,992.02 : x
  2. Step 2: Convert to fraction form
    247,399.54/341,412.84 = 139,992.02/x
  3. Step 3: Cross multiply
    247,399.54x = 341,412.84 × 139,992.02
  4. Step 4: Simplify right side
    247,399.54x = 47,795,073,125.54
  5. Step 5: Solve for x
    x = 47,795,073,125.54/247,399.54
  6. Step 6: Final answer
    x = 193,189.82

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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.