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Finding the Fourth Proportional to 395,518.73, 545,849.42 and 223,468.25

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Solution

The fourth proportional to 395,518.73, 545,849.42 and 223,468.25 is: 308,405.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,518.73 : 545,849.42 = 223,468.25 : x
  2. Step 2: Convert to fraction form
    395,518.73/545,849.42 = 223,468.25/x
  3. Step 3: Cross multiply
    395,518.73x = 545,849.42 × 223,468.25
  4. Step 4: Simplify right side
    395,518.73x = 121,980,010,804.33
  5. Step 5: Solve for x
    x = 121,980,010,804.33/395,518.73
  6. Step 6: Final answer
    x = 308,405.15

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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.