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Finding the Fourth Proportional to 323,714.80, 485,572.20 and 248,978.80

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Solution

The fourth proportional to 323,714.80, 485,572.20 and 248,978.80 is: 373,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,714.80 : 485,572.20 = 248,978.80 : x
  2. Step 2: Convert to fraction form
    323,714.80/485,572.20 = 248,978.80/x
  3. Step 3: Cross multiply
    323,714.80x = 485,572.20 × 248,978.80
  4. Step 4: Simplify right side
    323,714.80x = 120,897,183,669.36
  5. Step 5: Solve for x
    x = 120,897,183,669.36/323,714.80
  6. Step 6: Final answer
    x = 373,468.20

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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.