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Finding the Fourth Proportional to 326,027.50, 489,035.42 and 133,860.20

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Solution

The fourth proportional to 326,027.50, 489,035.42 and 133,860.20 is: 200,787.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,027.50 : 489,035.42 = 133,860.20 : x
  2. Step 2: Convert to fraction form
    326,027.50/489,035.42 = 133,860.20/x
  3. Step 3: Cross multiply
    326,027.50x = 489,035.42 × 133,860.20
  4. Step 4: Simplify right side
    326,027.50x = 65,462,379,932.56
  5. Step 5: Solve for x
    x = 65,462,379,932.56/326,027.50
  6. Step 6: Final answer
    x = 200,787.91

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1.5x scale

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.