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Finding the Fourth Proportional to 330,600.80, 495,901.20 and 81,282.80

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Solution

The fourth proportional to 330,600.80, 495,901.20 and 81,282.80 is: 121,924.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,600.80 : 495,901.20 = 81,282.80 : x
  2. Step 2: Convert to fraction form
    330,600.80/495,901.20 = 81,282.80/x
  3. Step 3: Cross multiply
    330,600.80x = 495,901.20 × 81,282.80
  4. Step 4: Simplify right side
    330,600.80x = 40,308,238,059.36
  5. Step 5: Solve for x
    x = 40,308,238,059.36/330,600.80
  6. Step 6: Final answer
    x = 121,924.20

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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.