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Finding the Fourth Proportional to 247,135.78, 341,047.05 and 133,958.50

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Solution

The fourth proportional to 247,135.78, 341,047.05 and 133,958.50 is: 184,862.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,135.78 : 341,047.05 = 133,958.50 : x
  2. Step 2: Convert to fraction form
    247,135.78/341,047.05 = 133,958.50/x
  3. Step 3: Cross multiply
    247,135.78x = 341,047.05 × 133,958.50
  4. Step 4: Simplify right side
    247,135.78x = 45,686,151,247.43
  5. Step 5: Solve for x
    x = 45,686,151,247.43/247,135.78
  6. Step 6: Final answer
    x = 184,862.55

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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.