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Finding the Fourth Proportional to 303,630.40, 455,365.95 and 90,340.93

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Solution

The fourth proportional to 303,630.40, 455,365.95 and 90,340.93 is: 135,487.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,630.40 : 455,365.95 = 90,340.93 : x
  2. Step 2: Convert to fraction form
    303,630.40/455,365.95 = 90,340.93/x
  3. Step 3: Cross multiply
    303,630.40x = 455,365.95 × 90,340.93
  4. Step 4: Simplify right side
    303,630.40x = 41,138,183,413.33
  5. Step 5: Solve for x
    x = 41,138,183,413.33/303,630.40
  6. Step 6: Final answer
    x = 135,487.70

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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.