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Finding the Fourth Proportional to 265,852.20, 398,413.80 and 170,790.60

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Solution

The fourth proportional to 265,852.20, 398,413.80 and 170,790.60 is: 255,951.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,852.20 : 398,413.80 = 170,790.60 : x
  2. Step 2: Convert to fraction form
    265,852.20/398,413.80 = 170,790.60/x
  3. Step 3: Cross multiply
    265,852.20x = 398,413.80 × 170,790.60
  4. Step 4: Simplify right side
    265,852.20x = 68,045,331,950.28
  5. Step 5: Solve for x
    x = 68,045,331,950.28/265,852.20
  6. Step 6: Final answer
    x = 255,951.74

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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.