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Finding the Fourth Proportional to 351,484.80, 527,227.20 and 126,879.90

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Solution

The fourth proportional to 351,484.80, 527,227.20 and 126,879.90 is: 190,319.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,484.80 : 527,227.20 = 126,879.90 : x
  2. Step 2: Convert to fraction form
    351,484.80/527,227.20 = 126,879.90/x
  3. Step 3: Cross multiply
    351,484.80x = 527,227.20 × 126,879.90
  4. Step 4: Simplify right side
    351,484.80x = 66,894,534,413.28
  5. Step 5: Solve for x
    x = 66,894,534,413.28/351,484.80
  6. Step 6: Final answer
    x = 190,319.85

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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.