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Finding the Fourth Proportional to 383,144.34, 528,755.60 and 213,378.47

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Solution

The fourth proportional to 383,144.34, 528,755.60 and 213,378.47 is: 294,471.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,144.34 : 528,755.60 = 213,378.47 : x
  2. Step 2: Convert to fraction form
    383,144.34/528,755.60 = 213,378.47/x
  3. Step 3: Cross multiply
    383,144.34x = 528,755.60 × 213,378.47
  4. Step 4: Simplify right side
    383,144.34x = 112,825,059,604.18
  5. Step 5: Solve for x
    x = 112,825,059,604.18/383,144.34
  6. Step 6: Final answer
    x = 294,471.42

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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.