Home / 330,449.20-495,395.16-143,319.76

Finding the Fourth Proportional to 330,449.20, 495,395.16 and 143,319.76

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Solution

The fourth proportional to 330,449.20, 495,395.16 and 143,319.76 is: 214,858.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,449.20 : 495,395.16 = 143,319.76 : x
  2. Step 2: Convert to fraction form
    330,449.20/495,395.16 = 143,319.76/x
  3. Step 3: Cross multiply
    330,449.20x = 495,395.16 × 143,319.76
  4. Step 4: Simplify right side
    330,449.20x = 70,999,915,436.36
  5. Step 5: Solve for x
    x = 70,999,915,436.36/330,449.20
  6. Step 6: Final answer
    x = 214,858.79

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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.