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Finding the Fourth Proportional to 247,189.48, 341,138.96 and 139,760.56

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Solution

The fourth proportional to 247,189.48, 341,138.96 and 139,760.56 is: 192,879.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,189.48 : 341,138.96 = 139,760.56 : x
  2. Step 2: Convert to fraction form
    247,189.48/341,138.96 = 139,760.56/x
  3. Step 3: Cross multiply
    247,189.48x = 341,138.96 × 139,760.56
  4. Step 4: Simplify right side
    247,189.48x = 47,677,772,087.42
  5. Step 5: Solve for x
    x = 47,677,772,087.42/247,189.48
  6. Step 6: Final answer
    x = 192,879.45

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1.5x scale

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.