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Finding the Fourth Proportional to 373,546, 515,493.48 and 203,780.80

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Solution

The fourth proportional to 373,546, 515,493.48 and 203,780.80 is: 281,217.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,546 : 515,493.48 = 203,780.80 : x
  2. Step 2: Convert to fraction form
    373,546/515,493.48 = 203,780.80/x
  3. Step 3: Cross multiply
    373,546x = 515,493.48 × 203,780.80
  4. Step 4: Simplify right side
    373,546x = 105,047,673,749.18
  5. Step 5: Solve for x
    x = 105,047,673,749.18/373,546
  6. Step 6: Final answer
    x = 281,217.50

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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.