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Finding the Fourth Proportional to 486,413.10, 729,622.08 and 219,861.54

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Solution

The fourth proportional to 486,413.10, 729,622.08 and 219,861.54 is: 329,793.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,413.10 : 729,622.08 = 219,861.54 : x
  2. Step 2: Convert to fraction form
    486,413.10/729,622.08 = 219,861.54/x
  3. Step 3: Cross multiply
    486,413.10x = 729,622.08 × 219,861.54
  4. Step 4: Simplify right side
    486,413.10x = 160,415,834,126.80
  5. Step 5: Solve for x
    x = 160,415,834,126.80/486,413.10
  6. Step 6: Final answer
    x = 329,793.41

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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.