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Finding the Fourth Proportional to 303,123.34, 418,136.56 and 189,749.26

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Solution

The fourth proportional to 303,123.34, 418,136.56 and 189,749.26 is: 261,745.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,123.34 : 418,136.56 = 189,749.26 : x
  2. Step 2: Convert to fraction form
    303,123.34/418,136.56 = 189,749.26/x
  3. Step 3: Cross multiply
    303,123.34x = 418,136.56 × 189,749.26
  4. Step 4: Simplify right side
    303,123.34x = 79,341,102,838.95
  5. Step 5: Solve for x
    x = 79,341,102,838.95/303,123.34
  6. Step 6: Final answer
    x = 261,745.28

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1.5x scale

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.