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Finding the Fourth Proportional to 247,309.13, 341,286.62 and 139,876.86

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Solution

The fourth proportional to 247,309.13, 341,286.62 and 139,876.86 is: 193,030.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,309.13 : 341,286.62 = 139,876.86 : x
  2. Step 2: Convert to fraction form
    247,309.13/341,286.62 = 139,876.86/x
  3. Step 3: Cross multiply
    247,309.13x = 341,286.62 × 139,876.86
  4. Step 4: Simplify right side
    247,309.13x = 47,738,100,066.23
  5. Step 5: Solve for x
    x = 47,738,100,066.23/247,309.13
  6. Step 6: Final answer
    x = 193,030.08

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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.