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Finding the Fourth Proportional to 326,979.68, 490,268.81 and 127,066.61

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Solution

The fourth proportional to 326,979.68, 490,268.81 and 127,066.61 is: 190,521.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,979.68 : 490,268.81 = 127,066.61 : x
  2. Step 2: Convert to fraction form
    326,979.68/490,268.81 = 127,066.61/x
  3. Step 3: Cross multiply
    326,979.68x = 490,268.81 × 127,066.61
  4. Step 4: Simplify right side
    326,979.68x = 62,296,797,218.77
  5. Step 5: Solve for x
    x = 62,296,797,218.77/326,979.68
  6. Step 6: Final answer
    x = 190,521.93

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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.