Home / 330,789.13-456,509-194,913.79

Finding the Fourth Proportional to 330,789.13, 456,509 and 194,913.79

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Solution

The fourth proportional to 330,789.13, 456,509 and 194,913.79 is: 268,992.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,789.13 : 456,509 = 194,913.79 : x
  2. Step 2: Convert to fraction form
    330,789.13/456,509 = 194,913.79/x
  3. Step 3: Cross multiply
    330,789.13x = 456,509 × 194,913.79
  4. Step 4: Simplify right side
    330,789.13x = 88,979,899,359.11
  5. Step 5: Solve for x
    x = 88,979,899,359.11/330,789.13
  6. Step 6: Final answer
    x = 268,992.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.