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Finding the Fourth Proportional to 352,137.46, 485,956.32 and 216,103.33

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Solution

The fourth proportional to 352,137.46, 485,956.32 and 216,103.33 is: 298,226.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,137.46 : 485,956.32 = 216,103.33 : x
  2. Step 2: Convert to fraction form
    352,137.46/485,956.32 = 216,103.33/x
  3. Step 3: Cross multiply
    352,137.46x = 485,956.32 × 216,103.33
  4. Step 4: Simplify right side
    352,137.46x = 105,016,778,986.55
  5. Step 5: Solve for x
    x = 105,016,778,986.55/352,137.46
  6. Step 6: Final answer
    x = 298,226.66

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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.