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Finding the Fourth Proportional to 388,647.54, 582,915.96 and 122,401.14

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Solution

The fourth proportional to 388,647.54, 582,915.96 and 122,401.14 is: 183,584.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,647.54 : 582,915.96 = 122,401.14 : x
  2. Step 2: Convert to fraction form
    388,647.54/582,915.96 = 122,401.14/x
  3. Step 3: Cross multiply
    388,647.54x = 582,915.96 × 122,401.14
  4. Step 4: Simplify right side
    388,647.54x = 71,349,578,028.19
  5. Step 5: Solve for x
    x = 71,349,578,028.19/388,647.54
  6. Step 6: Final answer
    x = 183,584.28

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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.