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Finding the Fourth Proportional to 355,375.45, 490,418.15 and 194,230.45

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Solution

The fourth proportional to 355,375.45, 490,418.15 and 194,230.45 is: 268,038.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,375.45 : 490,418.15 = 194,230.45 : x
  2. Step 2: Convert to fraction form
    355,375.45/490,418.15 = 194,230.45/x
  3. Step 3: Cross multiply
    355,375.45x = 490,418.15 × 194,230.45
  4. Step 4: Simplify right side
    355,375.45x = 95,254,136,991.52
  5. Step 5: Solve for x
    x = 95,254,136,991.52/355,375.45
  6. Step 6: Final answer
    x = 268,038.03

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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.