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Finding the Fourth Proportional to 215,413.60, 323,134.80 and 73,256.80

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Solution

The fourth proportional to 215,413.60, 323,134.80 and 73,256.80 is: 109,890.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,413.60 : 323,134.80 = 73,256.80 : x
  2. Step 2: Convert to fraction form
    215,413.60/323,134.80 = 73,256.80/x
  3. Step 3: Cross multiply
    215,413.60x = 323,134.80 × 73,256.80
  4. Step 4: Simplify right side
    215,413.60x = 23,671,821,416.64
  5. Step 5: Solve for x
    x = 23,671,821,416.64/215,413.60
  6. Step 6: Final answer
    x = 109,890.10

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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.