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Finding the Fourth Proportional to 399,761.08, 551,738.54 and 238,624.44

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Solution

The fourth proportional to 399,761.08, 551,738.54 and 238,624.44 is: 329,342.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,761.08 : 551,738.54 = 238,624.44 : x
  2. Step 2: Convert to fraction form
    399,761.08/551,738.54 = 238,624.44/x
  3. Step 3: Cross multiply
    399,761.08x = 551,738.54 × 238,624.44
  4. Step 4: Simplify right side
    399,761.08x = 131,658,300,133.92
  5. Step 5: Solve for x
    x = 131,658,300,133.92/399,761.08
  6. Step 6: Final answer
    x = 329,342.47

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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.