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Finding the Fourth Proportional to 330,336.48, 495,505.02 and 81,018.48

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Solution

The fourth proportional to 330,336.48, 495,505.02 and 81,018.48 is: 121,527.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,336.48 : 495,505.02 = 81,018.48 : x
  2. Step 2: Convert to fraction form
    330,336.48/495,505.02 = 81,018.48/x
  3. Step 3: Cross multiply
    330,336.48x = 495,505.02 × 81,018.48
  4. Step 4: Simplify right side
    330,336.48x = 40,145,063,552.77
  5. Step 5: Solve for x
    x = 40,145,063,552.77/330,336.48
  6. Step 6: Final answer
    x = 121,527.79

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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.