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Finding the Fourth Proportional to 373,753.60, 515,780.40 and 203,987.68

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Solution

The fourth proportional to 373,753.60, 515,780.40 and 203,987.68 is: 281,503.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,753.60 : 515,780.40 = 203,987.68 : x
  2. Step 2: Convert to fraction form
    373,753.60/515,780.40 = 203,987.68/x
  3. Step 3: Cross multiply
    373,753.60x = 515,780.40 × 203,987.68
  4. Step 4: Simplify right side
    373,753.60x = 105,212,847,185.47
  5. Step 5: Solve for x
    x = 105,212,847,185.47/373,753.60
  6. Step 6: Final answer
    x = 281,503.23

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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.