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Finding the Fourth Proportional to 331,497.91, 497,295.87 and 121,086.64

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Solution

The fourth proportional to 331,497.91, 497,295.87 and 121,086.64 is: 181,647.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,497.91 : 497,295.87 = 121,086.64 : x
  2. Step 2: Convert to fraction form
    331,497.91/497,295.87 = 121,086.64/x
  3. Step 3: Cross multiply
    331,497.91x = 497,295.87 × 121,086.64
  4. Step 4: Simplify right side
    331,497.91x = 60,215,885,984.18
  5. Step 5: Solve for x
    x = 60,215,885,984.18/331,497.91
  6. Step 6: Final answer
    x = 181,647.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.