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Finding the Fourth Proportional to 330,530.43, 495,795.81 and 218,184.39

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Solution

The fourth proportional to 330,530.43, 495,795.81 and 218,184.39 is: 327,276.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,530.43 : 495,795.81 = 218,184.39 : x
  2. Step 2: Convert to fraction form
    330,530.43/495,795.81 = 218,184.39/x
  3. Step 3: Cross multiply
    330,530.43x = 495,795.81 × 218,184.39
  4. Step 4: Simplify right side
    330,530.43x = 108,174,906,369.41
  5. Step 5: Solve for x
    x = 108,174,906,369.41/330,530.43
  6. Step 6: Final answer
    x = 327,276.69

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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.