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Finding the Fourth Proportional to 352,143.46, 485,964.60 and 216,109.34

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Solution

The fourth proportional to 352,143.46, 485,964.60 and 216,109.34 is: 298,234.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,143.46 : 485,964.60 = 216,109.34 : x
  2. Step 2: Convert to fraction form
    352,143.46/485,964.60 = 216,109.34/x
  3. Step 3: Cross multiply
    352,143.46x = 485,964.60 × 216,109.34
  4. Step 4: Simplify right side
    352,143.46x = 105,021,488,969.36
  5. Step 5: Solve for x
    x = 105,021,488,969.36/352,143.46
  6. Step 6: Final answer
    x = 298,234.96

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1.5x scale

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.