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Finding the Fourth Proportional to 352,087.87, 485,868.14 and 208,762.15

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Solution

The fourth proportional to 352,087.87, 485,868.14 and 208,762.15 is: 288,083.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,087.87 : 485,868.14 = 208,762.15 : x
  2. Step 2: Convert to fraction form
    352,087.87/485,868.14 = 208,762.15/x
  3. Step 3: Cross multiply
    352,087.87x = 485,868.14 × 208,762.15
  4. Step 4: Simplify right side
    352,087.87x = 101,430,874,049.75
  5. Step 5: Solve for x
    x = 101,430,874,049.75/352,087.87
  6. Step 6: Final answer
    x = 288,083.98

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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.