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Finding the Fourth Proportional to 303,840.80, 455,761.20 and 185,645.60

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Solution

The fourth proportional to 303,840.80, 455,761.20 and 185,645.60 is: 278,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,840.80 : 455,761.20 = 185,645.60 : x
  2. Step 2: Convert to fraction form
    303,840.80/455,761.20 = 185,645.60/x
  3. Step 3: Cross multiply
    303,840.80x = 455,761.20 × 185,645.60
  4. Step 4: Simplify right side
    303,840.80x = 84,610,061,430.72
  5. Step 5: Solve for x
    x = 84,610,061,430.72/303,840.80
  6. Step 6: Final answer
    x = 278,468.40

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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.