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Finding the Fourth Proportional to 485,923.32, 728,891.46 and 170,389.44

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Solution

The fourth proportional to 485,923.32, 728,891.46 and 170,389.44 is: 255,586.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,923.32 : 728,891.46 = 170,389.44 : x
  2. Step 2: Convert to fraction form
    485,923.32/728,891.46 = 170,389.44/x
  3. Step 3: Cross multiply
    485,923.32x = 728,891.46 × 170,389.44
  4. Step 4: Simplify right side
    485,923.32x = 124,195,407,690.18
  5. Step 5: Solve for x
    x = 124,195,407,690.18/485,923.32
  6. Step 6: Final answer
    x = 255,586.43

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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.