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Finding the Fourth Proportional to 351,090, 484,516.68 and 198,165.42

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Solution

The fourth proportional to 351,090, 484,516.68 and 198,165.42 is: 273,475.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,090 : 484,516.68 = 198,165.42 : x
  2. Step 2: Convert to fraction form
    351,090/484,516.68 = 198,165.42/x
  3. Step 3: Cross multiply
    351,090x = 484,516.68 × 198,165.42
  4. Step 4: Simplify right side
    351,090x = 96,014,451,389.21
  5. Step 5: Solve for x
    x = 96,014,451,389.21/351,090
  6. Step 6: Final answer
    x = 273,475.32

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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.