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Finding the Fourth Proportional to 352,128.87, 485,776.44 and 208,836.63

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Solution

The fourth proportional to 352,128.87, 485,776.44 and 208,836.63 is: 288,098.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,128.87 : 485,776.44 = 208,836.63 : x
  2. Step 2: Convert to fraction form
    352,128.87/485,776.44 = 208,836.63/x
  3. Step 3: Cross multiply
    352,128.87x = 485,776.44 × 208,836.63
  4. Step 4: Simplify right side
    352,128.87x = 101,447,914,663.00
  5. Step 5: Solve for x
    x = 101,447,914,663.00/352,128.87
  6. Step 6: Final answer
    x = 288,098.83

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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.