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Finding the Fourth Proportional to 489,625.33, 734,442.09 and 134,658.82

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Solution

The fourth proportional to 489,625.33, 734,442.09 and 134,658.82 is: 201,989.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,625.33 : 734,442.09 = 134,658.82 : x
  2. Step 2: Convert to fraction form
    489,625.33/734,442.09 = 134,658.82/x
  3. Step 3: Cross multiply
    489,625.33x = 734,442.09 × 134,658.82
  4. Step 4: Simplify right side
    489,625.33x = 98,899,105,197.73
  5. Step 5: Solve for x
    x = 98,899,105,197.73/489,625.33
  6. Step 6: Final answer
    x = 201,989.36

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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.