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Finding the Fourth Proportional to 388,729.14, 583,093.71 and 222,400.50

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Solution

The fourth proportional to 388,729.14, 583,093.71 and 222,400.50 is: 333,600.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,729.14 : 583,093.71 = 222,400.50 : x
  2. Step 2: Convert to fraction form
    388,729.14/583,093.71 = 222,400.50/x
  3. Step 3: Cross multiply
    388,729.14x = 583,093.71 × 222,400.50
  4. Step 4: Simplify right side
    388,729.14x = 129,680,332,650.86
  5. Step 5: Solve for x
    x = 129,680,332,650.86/388,729.14
  6. Step 6: Final answer
    x = 333,600.75

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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.