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Finding the Fourth Proportional to 268,413.70, 402,671.35 and 88,509.46

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Solution

The fourth proportional to 268,413.70, 402,671.35 and 88,509.46 is: 132,780.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,413.70 : 402,671.35 = 88,509.46 : x
  2. Step 2: Convert to fraction form
    268,413.70/402,671.35 = 88,509.46/x
  3. Step 3: Cross multiply
    268,413.70x = 402,671.35 × 88,509.46
  4. Step 4: Simplify right side
    268,413.70x = 35,640,223,745.97
  5. Step 5: Solve for x
    x = 35,640,223,745.97/268,413.70
  6. Step 6: Final answer
    x = 132,780.94

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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.