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Finding the Fourth Proportional to 388,191.33, 582,281.19 and 121,967.82

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Solution

The fourth proportional to 388,191.33, 582,281.19 and 121,967.82 is: 182,949.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,191.33 : 582,281.19 = 121,967.82 : x
  2. Step 2: Convert to fraction form
    388,191.33/582,281.19 = 121,967.82/x
  3. Step 3: Cross multiply
    388,191.33x = 582,281.19 × 121,967.82
  4. Step 4: Simplify right side
    388,191.33x = 71,019,567,371.31
  5. Step 5: Solve for x
    x = 71,019,567,371.31/388,191.33
  6. Step 6: Final answer
    x = 182,949.91

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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.