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Finding the Fourth Proportional to 326,289.87, 489,379.32 and 89,577.09

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Solution

The fourth proportional to 326,289.87, 489,379.32 and 89,577.09 is: 134,350.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,289.87 : 489,379.32 = 89,577.09 : x
  2. Step 2: Convert to fraction form
    326,289.87/489,379.32 = 89,577.09/x
  3. Step 3: Cross multiply
    326,289.87x = 489,379.32 × 89,577.09
  4. Step 4: Simplify right side
    326,289.87x = 43,837,175,391.78
  5. Step 5: Solve for x
    x = 43,837,175,391.78/326,289.87
  6. Step 6: Final answer
    x = 134,350.40

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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.