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Finding the Fourth Proportional to 505,267.69, 758,137.79 and 220,921.33

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Solution

The fourth proportional to 505,267.69, 758,137.79 and 220,921.33 is: 331,485.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,267.69 : 758,137.79 = 220,921.33 : x
  2. Step 2: Convert to fraction form
    505,267.69/758,137.79 = 220,921.33/x
  3. Step 3: Cross multiply
    505,267.69x = 758,137.79 × 220,921.33
  4. Step 4: Simplify right side
    505,267.69x = 167,488,808,890.06
  5. Step 5: Solve for x
    x = 167,488,808,890.06/505,267.69
  6. Step 6: Final answer
    x = 331,485.29

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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.