Home / 330,782.97-496,040.89-128,272.45

Finding the Fourth Proportional to 330,782.97, 496,040.89 and 128,272.45

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Solution

The fourth proportional to 330,782.97, 496,040.89 and 128,272.45 is: 192,356.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,782.97 : 496,040.89 = 128,272.45 : x
  2. Step 2: Convert to fraction form
    330,782.97/496,040.89 = 128,272.45/x
  3. Step 3: Cross multiply
    330,782.97x = 496,040.89 × 128,272.45
  4. Step 4: Simplify right side
    330,782.97x = 63,628,380,260.48
  5. Step 5: Solve for x
    x = 63,628,380,260.48/330,782.97
  6. Step 6: Final answer
    x = 192,356.88

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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.