Home / 485,990.03-729,310.43-201,680.86

Finding the Fourth Proportional to 485,990.03, 729,310.43 and 201,680.86

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Solution

The fourth proportional to 485,990.03, 729,310.43 and 201,680.86 is: 302,656.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,990.03 : 729,310.43 = 201,680.86 : x
  2. Step 2: Convert to fraction form
    485,990.03/729,310.43 = 201,680.86/x
  3. Step 3: Cross multiply
    485,990.03x = 729,310.43 × 201,680.86
  4. Step 4: Simplify right side
    485,990.03x = 147,087,954,729.37
  5. Step 5: Solve for x
    x = 147,087,954,729.37/485,990.03
  6. Step 6: Final answer
    x = 302,656.32

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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.