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Finding the Fourth Proportional to 355,530.66, 490,633.20 and 194,396.10

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Solution

The fourth proportional to 355,530.66, 490,633.20 and 194,396.10 is: 268,267.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,530.66 : 490,633.20 = 194,396.10 : x
  2. Step 2: Convert to fraction form
    355,530.66/490,633.20 = 194,396.10/x
  3. Step 3: Cross multiply
    355,530.66x = 490,633.20 × 194,396.10
  4. Step 4: Simplify right side
    355,530.66x = 95,377,180,610.52
  5. Step 5: Solve for x
    x = 95,377,180,610.52/355,530.66
  6. Step 6: Final answer
    x = 268,267.10

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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.