Home / 330,515.06-495,003.66-321,423.62

Finding the Fourth Proportional to 330,515.06, 495,003.66 and 321,423.62

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Solution

The fourth proportional to 330,515.06, 495,003.66 and 321,423.62 is: 481,387.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,515.06 : 495,003.66 = 321,423.62 : x
  2. Step 2: Convert to fraction form
    330,515.06/495,003.66 = 321,423.62/x
  3. Step 3: Cross multiply
    330,515.06x = 495,003.66 × 321,423.62
  4. Step 4: Simplify right side
    330,515.06x = 159,105,868,310.45
  5. Step 5: Solve for x
    x = 159,105,868,310.45/330,515.06
  6. Step 6: Final answer
    x = 481,387.65

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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.