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Finding the Fourth Proportional to 355,601.45, 490,704.80 and 202,634.77

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Solution

The fourth proportional to 355,601.45, 490,704.80 and 202,634.77 is: 279,621.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,601.45 : 490,704.80 = 202,634.77 : x
  2. Step 2: Convert to fraction form
    355,601.45/490,704.80 = 202,634.77/x
  3. Step 3: Cross multiply
    355,601.45x = 490,704.80 × 202,634.77
  4. Step 4: Simplify right side
    355,601.45x = 99,433,852,045.96
  5. Step 5: Solve for x
    x = 99,433,852,045.96/355,601.45
  6. Step 6: Final answer
    x = 279,621.62

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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.