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Finding the Fourth Proportional to 388,738.92, 583,106.05 and 100,550.57

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Solution

The fourth proportional to 388,738.92, 583,106.05 and 100,550.57 is: 150,825.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,738.92 : 583,106.05 = 100,550.57 : x
  2. Step 2: Convert to fraction form
    388,738.92/583,106.05 = 100,550.57/x
  3. Step 3: Cross multiply
    388,738.92x = 583,106.05 × 100,550.57
  4. Step 4: Simplify right side
    388,738.92x = 58,631,647,545.27
  5. Step 5: Solve for x
    x = 58,631,647,545.27/388,738.92
  6. Step 6: Final answer
    x = 150,825.26

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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.