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Finding the Fourth Proportional to 352,168.20, 486,078.84 and 216,234.72

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Solution

The fourth proportional to 352,168.20, 486,078.84 and 216,234.72 is: 298,457.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,168.20 : 486,078.84 = 216,234.72 : x
  2. Step 2: Convert to fraction form
    352,168.20/486,078.84 = 216,234.72/x
  3. Step 3: Cross multiply
    352,168.20x = 486,078.84 × 216,234.72
  4. Step 4: Simplify right side
    352,168.20x = 105,107,121,865.33
  5. Step 5: Solve for x
    x = 105,107,121,865.33/352,168.20
  6. Step 6: Final answer
    x = 298,457.16

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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.