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Finding the Fourth Proportional to 355,151.41, 490,123.85 and 204,248.53

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Solution

The fourth proportional to 355,151.41, 490,123.85 and 204,248.53 is: 281,871.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,151.41 : 490,123.85 = 204,248.53 : x
  2. Step 2: Convert to fraction form
    355,151.41/490,123.85 = 204,248.53/x
  3. Step 3: Cross multiply
    355,151.41x = 490,123.85 × 204,248.53
  4. Step 4: Simplify right side
    355,151.41x = 100,107,075,880.44
  5. Step 5: Solve for x
    x = 100,107,075,880.44/355,151.41
  6. Step 6: Final answer
    x = 281,871.54

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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.