Home / 458,979.08-687,976.41-221,995.76

Finding the Fourth Proportional to 458,979.08, 687,976.41 and 221,995.76

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Solution

The fourth proportional to 458,979.08, 687,976.41 and 221,995.76 is: 332,755.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,979.08 : 687,976.41 = 221,995.76 : x
  2. Step 2: Convert to fraction form
    458,979.08/687,976.41 = 221,995.76/x
  3. Step 3: Cross multiply
    458,979.08x = 687,976.41 × 221,995.76
  4. Step 4: Simplify right side
    458,979.08x = 152,727,846,000.02
  5. Step 5: Solve for x
    x = 152,727,846,000.02/458,979.08
  6. Step 6: Final answer
    x = 332,755.57

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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.