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Finding the Fourth Proportional to 378,004.70, 567,007.05 and 228,413.90

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Solution

The fourth proportional to 378,004.70, 567,007.05 and 228,413.90 is: 342,620.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,004.70 : 567,007.05 = 228,413.90 : x
  2. Step 2: Convert to fraction form
    378,004.70/567,007.05 = 228,413.90/x
  3. Step 3: Cross multiply
    378,004.70x = 567,007.05 × 228,413.90
  4. Step 4: Simplify right side
    378,004.70x = 129,512,291,618.00
  5. Step 5: Solve for x
    x = 129,512,291,618.00/378,004.70
  6. Step 6: Final answer
    x = 342,620.85

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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.