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Finding the Fourth Proportional to 383,100.55, 528,678.74 and 222,049.01

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Solution

The fourth proportional to 383,100.55, 528,678.74 and 222,049.01 is: 306,427.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,100.55 : 528,678.74 = 222,049.01 : x
  2. Step 2: Convert to fraction form
    383,100.55/528,678.74 = 222,049.01/x
  3. Step 3: Cross multiply
    383,100.55x = 528,678.74 × 222,049.01
  4. Step 4: Simplify right side
    383,100.55x = 117,392,592,701.87
  5. Step 5: Solve for x
    x = 117,392,592,701.87/383,100.55
  6. Step 6: Final answer
    x = 306,427.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.