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Finding the Fourth Proportional to 326,091.60, 489,137.40 and 148,944.60

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Solution

The fourth proportional to 326,091.60, 489,137.40 and 148,944.60 is: 223,416.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,091.60 : 489,137.40 = 148,944.60 : x
  2. Step 2: Convert to fraction form
    326,091.60/489,137.40 = 148,944.60/x
  3. Step 3: Cross multiply
    326,091.60x = 489,137.40 × 148,944.60
  4. Step 4: Simplify right side
    326,091.60x = 72,854,374,388.04
  5. Step 5: Solve for x
    x = 72,854,374,388.04/326,091.60
  6. Step 6: Final answer
    x = 223,416.90

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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.