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Finding the Fourth Proportional to 326,199.59, 489,133.31 and 112,945.05

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Solution

The fourth proportional to 326,199.59, 489,133.31 and 112,945.05 is: 169,360.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,199.59 : 489,133.31 = 112,945.05 : x
  2. Step 2: Convert to fraction form
    326,199.59/489,133.31 = 112,945.05/x
  3. Step 3: Cross multiply
    326,199.59x = 489,133.31 × 112,945.05
  4. Step 4: Simplify right side
    326,199.59x = 55,245,187,654.04
  5. Step 5: Solve for x
    x = 55,245,187,654.04/326,199.59
  6. Step 6: Final answer
    x = 169,360.08

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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.