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Finding the Fourth Proportional to 303,675.75, 455,789.88 and 161,640.43

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Solution

The fourth proportional to 303,675.75, 455,789.88 and 161,640.43 is: 242,607.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,675.75 : 455,789.88 = 161,640.43 : x
  2. Step 2: Convert to fraction form
    303,675.75/455,789.88 = 161,640.43/x
  3. Step 3: Cross multiply
    303,675.75x = 455,789.88 × 161,640.43
  4. Step 4: Simplify right side
    303,675.75x = 73,674,071,053.37
  5. Step 5: Solve for x
    x = 73,674,071,053.37/303,675.75
  6. Step 6: Final answer
    x = 242,607.69

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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.