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Finding the Fourth Proportional to 373,679.28, 515,688.30 and 203,924.34

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Solution

The fourth proportional to 373,679.28, 515,688.30 and 203,924.34 is: 281,421.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,679.28 : 515,688.30 = 203,924.34 : x
  2. Step 2: Convert to fraction form
    373,679.28/515,688.30 = 203,924.34/x
  3. Step 3: Cross multiply
    373,679.28x = 515,688.30 × 203,924.34
  4. Step 4: Simplify right side
    373,679.28x = 105,161,396,223.22
  5. Step 5: Solve for x
    x = 105,161,396,223.22/373,679.28
  6. Step 6: Final answer
    x = 281,421.53

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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.