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Finding the Fourth Proportional to 326,194.79, 489,174.81 and 112,904.78

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Solution

The fourth proportional to 326,194.79, 489,174.81 and 112,904.78 is: 169,316.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,194.79 : 489,174.81 = 112,904.78 : x
  2. Step 2: Convert to fraction form
    326,194.79/489,174.81 = 112,904.78/x
  3. Step 3: Cross multiply
    326,194.79x = 489,174.81 × 112,904.78
  4. Step 4: Simplify right side
    326,194.79x = 55,230,171,858.72
  5. Step 5: Solve for x
    x = 55,230,171,858.72/326,194.79
  6. Step 6: Final answer
    x = 169,316.54

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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.