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Finding the Fourth Proportional to 451,330.72, 622,754.62 and 290,148.80

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Solution

The fourth proportional to 451,330.72, 622,754.62 and 290,148.80 is: 400,352.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,330.72 : 622,754.62 = 290,148.80 : x
  2. Step 2: Convert to fraction form
    451,330.72/622,754.62 = 290,148.80/x
  3. Step 3: Cross multiply
    451,330.72x = 622,754.62 × 290,148.80
  4. Step 4: Simplify right side
    451,330.72x = 180,691,505,687.46
  5. Step 5: Solve for x
    x = 180,691,505,687.46/451,330.72
  6. Step 6: Final answer
    x = 400,352.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.