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Finding the Fourth Proportional to 311,639.73, 467,090.43 and 143,017.98

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Solution

The fourth proportional to 311,639.73, 467,090.43 and 143,017.98 is: 214,357.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,639.73 : 467,090.43 = 143,017.98 : x
  2. Step 2: Convert to fraction form
    311,639.73/467,090.43 = 143,017.98/x
  3. Step 3: Cross multiply
    311,639.73x = 467,090.43 × 143,017.98
  4. Step 4: Simplify right side
    311,639.73x = 66,802,329,775.93
  5. Step 5: Solve for x
    x = 66,802,329,775.93/311,639.73
  6. Step 6: Final answer
    x = 214,357.55

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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.