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Finding the Fourth Proportional to 388,418.67, 582,586.48 and 104,137.74

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Solution

The fourth proportional to 388,418.67, 582,586.48 and 104,137.74 is: 156,195.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,418.67 : 582,586.48 = 104,137.74 : x
  2. Step 2: Convert to fraction form
    388,418.67/582,586.48 = 104,137.74/x
  3. Step 3: Cross multiply
    388,418.67x = 582,586.48 × 104,137.74
  4. Step 4: Simplify right side
    388,418.67x = 60,669,239,381.76
  5. Step 5: Solve for x
    x = 60,669,239,381.76/388,418.67
  6. Step 6: Final answer
    x = 156,195.48

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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.