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Finding the Fourth Proportional to 330,081.39, 494,479.65 and 243,369.33

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Solution

The fourth proportional to 330,081.39, 494,479.65 and 243,369.33 is: 364,580.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,081.39 : 494,479.65 = 243,369.33 : x
  2. Step 2: Convert to fraction form
    330,081.39/494,479.65 = 243,369.33/x
  3. Step 3: Cross multiply
    330,081.39x = 494,479.65 × 243,369.33
  4. Step 4: Simplify right side
    330,081.39x = 120,341,180,177.47
  5. Step 5: Solve for x
    x = 120,341,180,177.47/330,081.39
  6. Step 6: Final answer
    x = 364,580.32

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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.