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Finding the Fourth Proportional to 355,631.31, 490,753.08 and 194,455.08

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Solution

The fourth proportional to 355,631.31, 490,753.08 and 194,455.08 is: 268,338.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,631.31 : 490,753.08 = 194,455.08 : x
  2. Step 2: Convert to fraction form
    355,631.31/490,753.08 = 194,455.08/x
  3. Step 3: Cross multiply
    355,631.31x = 490,753.08 × 194,455.08
  4. Step 4: Simplify right side
    355,631.31x = 95,429,429,431.65
  5. Step 5: Solve for x
    x = 95,429,429,431.65/355,631.31
  6. Step 6: Final answer
    x = 268,338.10

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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.