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Finding the Fourth Proportional to 355,428.08, 490,497.72 and 194,278.64

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Solution

The fourth proportional to 355,428.08, 490,497.72 and 194,278.64 is: 268,108.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,428.08 : 490,497.72 = 194,278.64 : x
  2. Step 2: Convert to fraction form
    355,428.08/490,497.72 = 194,278.64/x
  3. Step 3: Cross multiply
    355,428.08x = 490,497.72 × 194,278.64
  4. Step 4: Simplify right side
    355,428.08x = 95,293,229,964.70
  5. Step 5: Solve for x
    x = 95,293,229,964.70/355,428.08
  6. Step 6: Final answer
    x = 268,108.33

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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.