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Finding the Fourth Proportional to 355,715.31, 490,876.69 and 194,566.87

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Solution

The fourth proportional to 355,715.31, 490,876.69 and 194,566.87 is: 268,496.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,715.31 : 490,876.69 = 194,566.87 : x
  2. Step 2: Convert to fraction form
    355,715.31/490,876.69 = 194,566.87/x
  3. Step 3: Cross multiply
    355,715.31x = 490,876.69 × 194,566.87
  4. Step 4: Simplify right side
    355,715.31x = 95,508,340,156.43
  5. Step 5: Solve for x
    x = 95,508,340,156.43/355,715.31
  6. Step 6: Final answer
    x = 268,496.57

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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.