Home / 319,438.80-440,967.24-206,316.72

Finding the Fourth Proportional to 319,438.80, 440,967.24 and 206,316.72

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Solution

The fourth proportional to 319,438.80, 440,967.24 and 206,316.72 is: 284,808.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,438.80 : 440,967.24 = 206,316.72 : x
  2. Step 2: Convert to fraction form
    319,438.80/440,967.24 = 206,316.72/x
  3. Step 3: Cross multiply
    319,438.80x = 440,967.24 × 206,316.72
  4. Step 4: Simplify right side
    319,438.80x = 90,978,914,584.25
  5. Step 5: Solve for x
    x = 90,978,914,584.25/319,438.80
  6. Step 6: Final answer
    x = 284,808.59

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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.