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Finding the Fourth Proportional to 485,846.26, 728,628.45 and 186,305.02

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Solution

The fourth proportional to 485,846.26, 728,628.45 and 186,305.02 is: 279,403.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,846.26 : 728,628.45 = 186,305.02 : x
  2. Step 2: Convert to fraction form
    485,846.26/728,628.45 = 186,305.02/x
  3. Step 3: Cross multiply
    485,846.26x = 728,628.45 × 186,305.02
  4. Step 4: Simplify right side
    485,846.26x = 135,747,137,949.82
  5. Step 5: Solve for x
    x = 135,747,137,949.82/485,846.26
  6. Step 6: Final answer
    x = 279,403.48

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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.