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Finding the Fourth Proportional to 323,765.20, 485,647.80 and 235,637.20

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Solution

The fourth proportional to 323,765.20, 485,647.80 and 235,637.20 is: 353,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,765.20 : 485,647.80 = 235,637.20 : x
  2. Step 2: Convert to fraction form
    323,765.20/485,647.80 = 235,637.20/x
  3. Step 3: Cross multiply
    323,765.20x = 485,647.80 × 235,637.20
  4. Step 4: Simplify right side
    323,765.20x = 114,436,687,778.16
  5. Step 5: Solve for x
    x = 114,436,687,778.16/323,765.20
  6. Step 6: Final answer
    x = 353,455.80

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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.