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Finding the Fourth Proportional to 373,775.61, 515,794.32 and 220,863

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Solution

The fourth proportional to 373,775.61, 515,794.32 and 220,863 is: 304,781.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,775.61 : 515,794.32 = 220,863 : x
  2. Step 2: Convert to fraction form
    373,775.61/515,794.32 = 220,863/x
  3. Step 3: Cross multiply
    373,775.61x = 515,794.32 × 220,863
  4. Step 4: Simplify right side
    373,775.61x = 113,919,880,898.16
  5. Step 5: Solve for x
    x = 113,919,880,898.16/373,775.61
  6. Step 6: Final answer
    x = 304,781.47

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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.