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Finding the Fourth Proportional to 373,196.57, 515,016.63 and 203,430.69

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Solution

The fourth proportional to 373,196.57, 515,016.63 and 203,430.69 is: 280,737.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,196.57 : 515,016.63 = 203,430.69 : x
  2. Step 2: Convert to fraction form
    373,196.57/515,016.63 = 203,430.69/x
  3. Step 3: Cross multiply
    373,196.57x = 515,016.63 × 203,430.69
  4. Step 4: Simplify right side
    373,196.57x = 104,770,187,385.22
  5. Step 5: Solve for x
    x = 104,770,187,385.22/373,196.57
  6. Step 6: Final answer
    x = 280,737.27

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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.