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Finding the Fourth Proportional to 355,529.66, 490,631.82 and 194,395.12

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Solution

The fourth proportional to 355,529.66, 490,631.82 and 194,395.12 is: 268,265.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,529.66 : 490,631.82 = 194,395.12 : x
  2. Step 2: Convert to fraction form
    355,529.66/490,631.82 = 194,395.12/x
  3. Step 3: Cross multiply
    355,529.66x = 490,631.82 × 194,395.12
  4. Step 4: Simplify right side
    355,529.66x = 95,376,431,524.72
  5. Step 5: Solve for x
    x = 95,376,431,524.72/355,529.66
  6. Step 6: Final answer
    x = 268,265.75

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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.