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Finding the Fourth Proportional to 388,122.85, 582,208.98 and 121,893.87

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Solution

The fourth proportional to 388,122.85, 582,208.98 and 121,893.87 is: 182,848.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,122.85 : 582,208.98 = 121,893.87 : x
  2. Step 2: Convert to fraction form
    388,122.85/582,208.98 = 121,893.87/x
  3. Step 3: Cross multiply
    388,122.85x = 582,208.98 × 121,893.87
  4. Step 4: Simplify right side
    388,122.85x = 70,967,705,720.95
  5. Step 5: Solve for x
    x = 70,967,705,720.95/388,122.85
  6. Step 6: Final answer
    x = 182,848.56

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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.