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Finding the Fourth Proportional to 395,479.80, 545,795.73 and 223,429.37

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Solution

The fourth proportional to 395,479.80, 545,795.73 and 223,429.37 is: 308,351.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,479.80 : 545,795.73 = 223,429.37 : x
  2. Step 2: Convert to fraction form
    395,479.80/545,795.73 = 223,429.37/x
  3. Step 3: Cross multiply
    395,479.80x = 545,795.73 × 223,429.37
  4. Step 4: Simplify right side
    395,479.80x = 121,946,793,373.61
  5. Step 5: Solve for x
    x = 121,946,793,373.61/395,479.80
  6. Step 6: Final answer
    x = 308,351.51

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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.