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Finding the Fourth Proportional to 205,563.99, 308,347.62 and 72,413.76

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Solution

The fourth proportional to 205,563.99, 308,347.62 and 72,413.76 is: 108,621.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,563.99 : 308,347.62 = 72,413.76 : x
  2. Step 2: Convert to fraction form
    205,563.99/308,347.62 = 72,413.76/x
  3. Step 3: Cross multiply
    205,563.99x = 308,347.62 × 72,413.76
  4. Step 4: Simplify right side
    205,563.99x = 22,328,610,551.25
  5. Step 5: Solve for x
    x = 22,328,610,551.25/205,563.99
  6. Step 6: Final answer
    x = 108,621.22

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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.