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Finding the Fourth Proportional to 317,620.44, 476,427.78 and 140,127.60

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Solution

The fourth proportional to 317,620.44, 476,427.78 and 140,127.60 is: 210,190.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,620.44 : 476,427.78 = 140,127.60 : x
  2. Step 2: Convert to fraction form
    317,620.44/476,427.78 = 140,127.60/x
  3. Step 3: Cross multiply
    317,620.44x = 476,427.78 × 140,127.60
  4. Step 4: Simplify right side
    317,620.44x = 66,760,681,384.73
  5. Step 5: Solve for x
    x = 66,760,681,384.73/317,620.44
  6. Step 6: Final answer
    x = 210,190.13

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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.