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Finding the Fourth Proportional to 330,336.85, 495,505.59 and 81,018.85

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Solution

The fourth proportional to 330,336.85, 495,505.59 and 81,018.85 is: 121,528.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,336.85 : 495,505.59 = 81,018.85 : x
  2. Step 2: Convert to fraction form
    330,336.85/495,505.59 = 81,018.85/x
  3. Step 3: Cross multiply
    330,336.85x = 495,505.59 × 81,018.85
  4. Step 4: Simplify right side
    330,336.85x = 40,145,292,456.86
  5. Step 5: Solve for x
    x = 40,145,292,456.86/330,336.85
  6. Step 6: Final answer
    x = 121,528.35

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1.5x scale

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.