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Finding the Fourth Proportional to 386,150.40, 579,268.80 and 119,908.80

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Solution

The fourth proportional to 386,150.40, 579,268.80 and 119,908.80 is: 179,876.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,150.40 : 579,268.80 = 119,908.80 : x
  2. Step 2: Convert to fraction form
    386,150.40/579,268.80 = 119,908.80/x
  3. Step 3: Cross multiply
    386,150.40x = 579,268.80 × 119,908.80
  4. Step 4: Simplify right side
    386,150.40x = 69,459,426,685.44
  5. Step 5: Solve for x
    x = 69,459,426,685.44/386,150.40
  6. Step 6: Final answer
    x = 179,876.61

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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.