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Finding the Fourth Proportional to 326,311.60, 489,208.20 and 178,567.60

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Solution

The fourth proportional to 326,311.60, 489,208.20 and 178,567.60 is: 267,709.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,311.60 : 489,208.20 = 178,567.60 : x
  2. Step 2: Convert to fraction form
    326,311.60/489,208.20 = 178,567.60/x
  3. Step 3: Cross multiply
    326,311.60x = 489,208.20 × 178,567.60
  4. Step 4: Simplify right side
    326,311.60x = 87,356,734,174.32
  5. Step 5: Solve for x
    x = 87,356,734,174.32/326,311.60
  6. Step 6: Final answer
    x = 267,709.56

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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.