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Finding the Fourth Proportional to 373,812.96, 515,873.52 and 212,691.36

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Solution

The fourth proportional to 373,812.96, 515,873.52 and 212,691.36 is: 293,520.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,812.96 : 515,873.52 = 212,691.36 : x
  2. Step 2: Convert to fraction form
    373,812.96/515,873.52 = 212,691.36/x
  3. Step 3: Cross multiply
    373,812.96x = 515,873.52 × 212,691.36
  4. Step 4: Simplify right side
    373,812.96x = 109,721,840,556.79
  5. Step 5: Solve for x
    x = 109,721,840,556.79/373,812.96
  6. Step 6: Final answer
    x = 293,520.70

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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.