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Finding the Fourth Proportional to 397,390.79, 548,413.71 and 227,657.72

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Solution

The fourth proportional to 397,390.79, 548,413.71 and 227,657.72 is: 314,175.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,390.79 : 548,413.71 = 227,657.72 : x
  2. Step 2: Convert to fraction form
    397,390.79/548,413.71 = 227,657.72/x
  3. Step 3: Cross multiply
    397,390.79x = 548,413.71 × 227,657.72
  4. Step 4: Simplify right side
    397,390.79x = 124,850,615,352.66
  5. Step 5: Solve for x
    x = 124,850,615,352.66/397,390.79
  6. Step 6: Final answer
    x = 314,175.91

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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.