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Finding the Fourth Proportional to 326,171.56, 489,330.96 and 115,809.52

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Solution

The fourth proportional to 326,171.56, 489,330.96 and 115,809.52 is: 173,740.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,171.56 : 489,330.96 = 115,809.52 : x
  2. Step 2: Convert to fraction form
    326,171.56/489,330.96 = 115,809.52/x
  3. Step 3: Cross multiply
    326,171.56x = 489,330.96 × 115,809.52
  4. Step 4: Simplify right side
    326,171.56x = 56,669,183,598.74
  5. Step 5: Solve for x
    x = 56,669,183,598.74/326,171.56
  6. Step 6: Final answer
    x = 173,740.42

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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.