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Finding the Fourth Proportional to 383,101.05, 528,679.43 and 222,049.52

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Solution

The fourth proportional to 383,101.05, 528,679.43 and 222,049.52 is: 306,428.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,101.05 : 528,679.43 = 222,049.52 : x
  2. Step 2: Convert to fraction form
    383,101.05/528,679.43 = 222,049.52/x
  3. Step 3: Cross multiply
    383,101.05x = 528,679.43 × 222,049.52
  4. Step 4: Simplify right side
    383,101.05x = 117,393,011,021.98
  5. Step 5: Solve for x
    x = 117,393,011,021.98/383,101.05
  6. Step 6: Final answer
    x = 306,428.32

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1.5x scale

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.