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Finding the Fourth Proportional to 355,625.79, 490,808.51 and 233,221.12

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Solution

The fourth proportional to 355,625.79, 490,808.51 and 233,221.12 is: 321,874.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,625.79 : 490,808.51 = 233,221.12 : x
  2. Step 2: Convert to fraction form
    355,625.79/490,808.51 = 233,221.12/x
  3. Step 3: Cross multiply
    355,625.79x = 490,808.51 × 233,221.12
  4. Step 4: Simplify right side
    355,625.79x = 114,466,912,961.85
  5. Step 5: Solve for x
    x = 114,466,912,961.85/355,625.79
  6. Step 6: Final answer
    x = 321,874.61

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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.