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Finding the Fourth Proportional to 397,889.90, 596,841.06 and 221,517.92

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Solution

The fourth proportional to 397,889.90, 596,841.06 and 221,517.92 is: 332,280.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,889.90 : 596,841.06 = 221,517.92 : x
  2. Step 2: Convert to fraction form
    397,889.90/596,841.06 = 221,517.92/x
  3. Step 3: Cross multiply
    397,889.90x = 596,841.06 × 221,517.92
  4. Step 4: Simplify right side
    397,889.90x = 132,210,990,181.80
  5. Step 5: Solve for x
    x = 132,210,990,181.80/397,889.90
  6. Step 6: Final answer
    x = 332,280.34

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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.