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Finding the Fourth Proportional to 485,838.36, 728,674.92 and 130,773.24

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Solution

The fourth proportional to 485,838.36, 728,674.92 and 130,773.24 is: 196,137.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,838.36 : 728,674.92 = 130,773.24 : x
  2. Step 2: Convert to fraction form
    485,838.36/728,674.92 = 130,773.24/x
  3. Step 3: Cross multiply
    485,838.36x = 728,674.92 × 130,773.24
  4. Step 4: Simplify right side
    485,838.36x = 95,291,180,195.14
  5. Step 5: Solve for x
    x = 95,291,180,195.14/485,838.36
  6. Step 6: Final answer
    x = 196,137.62

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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.