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Finding the Fourth Proportional to 539,421.20, 809,455.80 and 223,845.20

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Solution

The fourth proportional to 539,421.20, 809,455.80 and 223,845.20 is: 335,902.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,421.20 : 809,455.80 = 223,845.20 : x
  2. Step 2: Convert to fraction form
    539,421.20/809,455.80 = 223,845.20/x
  3. Step 3: Cross multiply
    539,421.20x = 809,455.80 × 223,845.20
  4. Step 4: Simplify right side
    539,421.20x = 181,192,795,442.16
  5. Step 5: Solve for x
    x = 181,192,795,442.16/539,421.20
  6. Step 6: Final answer
    x = 335,902.25

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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.