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Finding the Fourth Proportional to 247,041.54, 340,908.42 and 139,609.20

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Solution

The fourth proportional to 247,041.54, 340,908.42 and 139,609.20 is: 192,655.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,041.54 : 340,908.42 = 139,609.20 : x
  2. Step 2: Convert to fraction form
    247,041.54/340,908.42 = 139,609.20/x
  3. Step 3: Cross multiply
    247,041.54x = 340,908.42 × 139,609.20
  4. Step 4: Simplify right side
    247,041.54x = 47,593,951,789.46
  5. Step 5: Solve for x
    x = 47,593,951,789.46/247,041.54
  6. Step 6: Final answer
    x = 192,655.66

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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.