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Finding the Fourth Proportional to 363,485.80, 545,189.82 and 126,832.96

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Solution

The fourth proportional to 363,485.80, 545,189.82 and 126,832.96 is: 190,235.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,485.80 : 545,189.82 = 126,832.96 : x
  2. Step 2: Convert to fraction form
    363,485.80/545,189.82 = 126,832.96/x
  3. Step 3: Cross multiply
    363,485.80x = 545,189.82 × 126,832.96
  4. Step 4: Simplify right side
    363,485.80x = 69,148,038,632.47
  5. Step 5: Solve for x
    x = 69,148,038,632.47/363,485.80
  6. Step 6: Final answer
    x = 190,235.87

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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.