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Finding the Fourth Proportional to 303,658.26, 455,440.56 and 103,932.78

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Solution

The fourth proportional to 303,658.26, 455,440.56 and 103,932.78 is: 155,883.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,658.26 : 455,440.56 = 103,932.78 : x
  2. Step 2: Convert to fraction form
    303,658.26/455,440.56 = 103,932.78/x
  3. Step 3: Cross multiply
    303,658.26x = 455,440.56 × 103,932.78
  4. Step 4: Simplify right side
    303,658.26x = 47,335,203,525.56
  5. Step 5: Solve for x
    x = 47,335,203,525.56/303,658.26
  6. Step 6: Final answer
    x = 155,883.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.