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Finding the Fourth Proportional to 275,806.30, 413,709.45 and 256,123.30

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Solution

The fourth proportional to 275,806.30, 413,709.45 and 256,123.30 is: 384,184.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,806.30 : 413,709.45 = 256,123.30 : x
  2. Step 2: Convert to fraction form
    275,806.30/413,709.45 = 256,123.30/x
  3. Step 3: Cross multiply
    275,806.30x = 413,709.45 × 256,123.30
  4. Step 4: Simplify right side
    275,806.30x = 105,960,629,575.19
  5. Step 5: Solve for x
    x = 105,960,629,575.19/275,806.30
  6. Step 6: Final answer
    x = 384,184.95

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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.