Home / 485,650.11-728,300.19-205,189.23

Finding the Fourth Proportional to 485,650.11, 728,300.19 and 205,189.23

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Solution

The fourth proportional to 485,650.11, 728,300.19 and 205,189.23 is: 307,709.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,650.11 : 728,300.19 = 205,189.23 : x
  2. Step 2: Convert to fraction form
    485,650.11/728,300.19 = 205,189.23/x
  3. Step 3: Cross multiply
    485,650.11x = 728,300.19 × 205,189.23
  4. Step 4: Simplify right side
    485,650.11x = 149,439,355,194.95
  5. Step 5: Solve for x
    x = 149,439,355,194.95/485,650.11
  6. Step 6: Final answer
    x = 307,709.92

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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.