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Finding the Fourth Proportional to 326,410.56, 489,766.70 and 148,971.96

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Solution

The fourth proportional to 326,410.56, 489,766.70 and 148,971.96 is: 223,526.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,410.56 : 489,766.70 = 148,971.96 : x
  2. Step 2: Convert to fraction form
    326,410.56/489,766.70 = 148,971.96/x
  3. Step 3: Cross multiply
    326,410.56x = 489,766.70 × 148,971.96
  4. Step 4: Simplify right side
    326,410.56x = 72,961,505,614.16
  5. Step 5: Solve for x
    x = 72,961,505,614.16/326,410.56
  6. Step 6: Final answer
    x = 223,526.79

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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.