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Finding the Fourth Proportional to 443,619.75, 612,195.54 and 239,670.56

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Solution

The fourth proportional to 443,619.75, 612,195.54 and 239,670.56 is: 330,745.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,619.75 : 612,195.54 = 239,670.56 : x
  2. Step 2: Convert to fraction form
    443,619.75/612,195.54 = 239,670.56/x
  3. Step 3: Cross multiply
    443,619.75x = 612,195.54 × 239,670.56
  4. Step 4: Simplify right side
    443,619.75x = 146,725,248,533.03
  5. Step 5: Solve for x
    x = 146,725,248,533.03/443,619.75
  6. Step 6: Final answer
    x = 330,745.53

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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.