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Finding the Fourth Proportional to 270,367.88, 405,557.28 and 83,379.38

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Solution

The fourth proportional to 270,367.88, 405,557.28 and 83,379.38 is: 125,070.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,367.88 : 405,557.28 = 83,379.38 : x
  2. Step 2: Convert to fraction form
    270,367.88/405,557.28 = 83,379.38/x
  3. Step 3: Cross multiply
    270,367.88x = 405,557.28 × 83,379.38
  4. Step 4: Simplify right side
    270,367.88x = 33,815,112,533.10
  5. Step 5: Solve for x
    x = 33,815,112,533.10/270,367.88
  6. Step 6: Final answer
    x = 125,070.75

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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.