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Finding the Fourth Proportional to 352,458.45, 486,645.43 and 216,674.44

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Solution

The fourth proportional to 352,458.45, 486,645.43 and 216,674.44 is: 299,166.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,458.45 : 486,645.43 = 216,674.44 : x
  2. Step 2: Convert to fraction form
    352,458.45/486,645.43 = 216,674.44/x
  3. Step 3: Cross multiply
    352,458.45x = 486,645.43 × 216,674.44
  4. Step 4: Simplify right side
    352,458.45x = 105,443,622,507.21
  5. Step 5: Solve for x
    x = 105,443,622,507.21/352,458.45
  6. Step 6: Final answer
    x = 299,166.11

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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.