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Finding the Fourth Proportional to 331,200.78, 456,044.90 and 249,647.54

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Solution

The fourth proportional to 331,200.78, 456,044.90 and 249,647.54 is: 343,750.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,200.78 : 456,044.90 = 249,647.54 : x
  2. Step 2: Convert to fraction form
    331,200.78/456,044.90 = 249,647.54/x
  3. Step 3: Cross multiply
    331,200.78x = 456,044.90 × 249,647.54
  4. Step 4: Simplify right side
    331,200.78x = 113,850,487,414.55
  5. Step 5: Solve for x
    x = 113,850,487,414.55/331,200.78
  6. Step 6: Final answer
    x = 343,750.66

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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.