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Finding the Fourth Proportional to 247,980.76, 372,076.47 and 135,529.61

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Solution

The fourth proportional to 247,980.76, 372,076.47 and 135,529.61 is: 203,351.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,980.76 : 372,076.47 = 135,529.61 : x
  2. Step 2: Convert to fraction form
    247,980.76/372,076.47 = 135,529.61/x
  3. Step 3: Cross multiply
    247,980.76x = 372,076.47 × 135,529.61
  4. Step 4: Simplify right side
    247,980.76x = 50,427,379,767.11
  5. Step 5: Solve for x
    x = 50,427,379,767.11/247,980.76
  6. Step 6: Final answer
    x = 203,351.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.