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Finding the Fourth Proportional to 392,328.63, 541,413.86 and 220,222.53

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Solution

The fourth proportional to 392,328.63, 541,413.86 and 220,222.53 is: 303,907.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,328.63 : 541,413.86 = 220,222.53 : x
  2. Step 2: Convert to fraction form
    392,328.63/541,413.86 = 220,222.53/x
  3. Step 3: Cross multiply
    392,328.63x = 541,413.86 × 220,222.53
  4. Step 4: Simplify right side
    392,328.63x = 119,231,528,925.15
  5. Step 5: Solve for x
    x = 119,231,528,925.15/392,328.63
  6. Step 6: Final answer
    x = 303,907.29

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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.