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Finding the Fourth Proportional to 351,485.52, 527,119.20 and 126,816.75

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Solution

The fourth proportional to 351,485.52, 527,119.20 and 126,816.75 is: 190,185.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,485.52 : 527,119.20 = 126,816.75 : x
  2. Step 2: Convert to fraction form
    351,485.52/527,119.20 = 126,816.75/x
  3. Step 3: Cross multiply
    351,485.52x = 527,119.20 × 126,816.75
  4. Step 4: Simplify right side
    351,485.52x = 66,847,543,806.60
  5. Step 5: Solve for x
    x = 66,847,543,806.60/351,485.52
  6. Step 6: Final answer
    x = 190,185.77

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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.