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Finding the Fourth Proportional to 388,522.95, 582,863.25 and 122,221.53

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Solution

The fourth proportional to 388,522.95, 582,863.25 and 122,221.53 is: 183,357.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,522.95 : 582,863.25 = 122,221.53 : x
  2. Step 2: Convert to fraction form
    388,522.95/582,863.25 = 122,221.53/x
  3. Step 3: Cross multiply
    388,522.95x = 582,863.25 × 122,221.53
  4. Step 4: Simplify right side
    388,522.95x = 71,238,437,232.89
  5. Step 5: Solve for x
    x = 71,238,437,232.89/388,522.95
  6. Step 6: Final answer
    x = 183,357.09

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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.