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Finding the Fourth Proportional to 545,074.31, 752,202.55 and 303,413.97

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Solution

The fourth proportional to 545,074.31, 752,202.55 and 303,413.97 is: 418,711.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,074.31 : 752,202.55 = 303,413.97 : x
  2. Step 2: Convert to fraction form
    545,074.31/752,202.55 = 303,413.97/x
  3. Step 3: Cross multiply
    545,074.31x = 752,202.55 × 303,413.97
  4. Step 4: Simplify right side
    545,074.31x = 228,228,760,422.55
  5. Step 5: Solve for x
    x = 228,228,760,422.55/545,074.31
  6. Step 6: Final answer
    x = 418,711.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.