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Finding the Fourth Proportional to 454,605.72, 681,884.04 and 139,062.66

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Solution

The fourth proportional to 454,605.72, 681,884.04 and 139,062.66 is: 208,586.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,605.72 : 681,884.04 = 139,062.66 : x
  2. Step 2: Convert to fraction form
    454,605.72/681,884.04 = 139,062.66/x
  3. Step 3: Cross multiply
    454,605.72x = 681,884.04 × 139,062.66
  4. Step 4: Simplify right side
    454,605.72x = 94,824,608,413.95
  5. Step 5: Solve for x
    x = 94,824,608,413.95/454,605.72
  6. Step 6: Final answer
    x = 208,586.48

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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.