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Finding the Fourth Proportional to 303,644.80, 455,175.60 and 236,139.40

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Solution

The fourth proportional to 303,644.80, 455,175.60 and 236,139.40 is: 353,982.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,644.80 : 455,175.60 = 236,139.40 : x
  2. Step 2: Convert to fraction form
    303,644.80/455,175.60 = 236,139.40/x
  3. Step 3: Cross multiply
    303,644.80x = 455,175.60 × 236,139.40
  4. Step 4: Simplify right side
    303,644.80x = 107,484,893,078.64
  5. Step 5: Solve for x
    x = 107,484,893,078.64/303,644.80
  6. Step 6: Final answer
    x = 353,982.33

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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.