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Finding the Fourth Proportional to 326,157.85, 488,835.21 and 155,469.32

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Solution

The fourth proportional to 326,157.85, 488,835.21 and 155,469.32 is: 233,012.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,157.85 : 488,835.21 = 155,469.32 : x
  2. Step 2: Convert to fraction form
    326,157.85/488,835.21 = 155,469.32/x
  3. Step 3: Cross multiply
    326,157.85x = 488,835.21 × 155,469.32
  4. Step 4: Simplify right side
    326,157.85x = 75,998,875,246.58
  5. Step 5: Solve for x
    x = 75,998,875,246.58/326,157.85
  6. Step 6: Final answer
    x = 233,012.56

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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.