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Finding the Fourth Proportional to 616,976.46, 925,603.05 and 217,620.54

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Solution

The fourth proportional to 616,976.46, 925,603.05 and 217,620.54 is: 326,479.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,976.46 : 925,603.05 = 217,620.54 : x
  2. Step 2: Convert to fraction form
    616,976.46/925,603.05 = 217,620.54/x
  3. Step 3: Cross multiply
    616,976.46x = 925,603.05 × 217,620.54
  4. Step 4: Simplify right side
    616,976.46x = 201,430,235,566.65
  5. Step 5: Solve for x
    x = 201,430,235,566.65/616,976.46
  6. Step 6: Final answer
    x = 326,479.61

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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.