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Finding the Fourth Proportional to 425,257.38, 637,664.58 and 200,557.49

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Solution

The fourth proportional to 425,257.38, 637,664.58 and 200,557.49 is: 300,731.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,257.38 : 637,664.58 = 200,557.49 : x
  2. Step 2: Convert to fraction form
    425,257.38/637,664.58 = 200,557.49/x
  3. Step 3: Cross multiply
    425,257.38x = 637,664.58 × 200,557.49
  4. Step 4: Simplify right side
    425,257.38x = 127,888,404,438.38
  5. Step 5: Solve for x
    x = 127,888,404,438.38/425,257.38
  6. Step 6: Final answer
    x = 300,731.77

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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.