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Finding the Fourth Proportional to 303,721.60, 455,582.40 and 82,105.60

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Solution

The fourth proportional to 303,721.60, 455,582.40 and 82,105.60 is: 123,158.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,721.60 : 455,582.40 = 82,105.60 : x
  2. Step 2: Convert to fraction form
    303,721.60/455,582.40 = 82,105.60/x
  3. Step 3: Cross multiply
    303,721.60x = 455,582.40 × 82,105.60
  4. Step 4: Simplify right side
    303,721.60x = 37,405,866,301.44
  5. Step 5: Solve for x
    x = 37,405,866,301.44/303,721.60
  6. Step 6: Final answer
    x = 123,158.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.