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Finding the Fourth Proportional to 326,090.94, 489,157.29 and 112,879.38

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Solution

The fourth proportional to 326,090.94, 489,157.29 and 112,879.38 is: 169,326.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,090.94 : 489,157.29 = 112,879.38 : x
  2. Step 2: Convert to fraction form
    326,090.94/489,157.29 = 112,879.38/x
  3. Step 3: Cross multiply
    326,090.94x = 489,157.29 × 112,879.38
  4. Step 4: Simplify right side
    326,090.94x = 55,215,771,617.68
  5. Step 5: Solve for x
    x = 55,215,771,617.68/326,090.94
  6. Step 6: Final answer
    x = 169,326.30

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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.