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Finding the Fourth Proportional to 354,990.48, 489,890.88 and 193,847.46

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Solution

The fourth proportional to 354,990.48, 489,890.88 and 193,847.46 is: 267,511.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,990.48 : 489,890.88 = 193,847.46 : x
  2. Step 2: Convert to fraction form
    354,990.48/489,890.88 = 193,847.46/x
  3. Step 3: Cross multiply
    354,990.48x = 489,890.88 × 193,847.46
  4. Step 4: Simplify right side
    354,990.48x = 94,964,102,765.16
  5. Step 5: Solve for x
    x = 94,964,102,765.16/354,990.48
  6. Step 6: Final answer
    x = 267,511.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.