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Finding the Fourth Proportional to 395,482.22, 545,813.42 and 223,407.44

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Solution

The fourth proportional to 395,482.22, 545,813.42 and 223,407.44 is: 308,329.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,482.22 : 545,813.42 = 223,407.44 : x
  2. Step 2: Convert to fraction form
    395,482.22/545,813.42 = 223,407.44/x
  3. Step 3: Cross multiply
    395,482.22x = 545,813.42 × 223,407.44
  4. Step 4: Simplify right side
    395,482.22x = 121,938,778,879.85
  5. Step 5: Solve for x
    x = 121,938,778,879.85/395,482.22
  6. Step 6: Final answer
    x = 308,329.36

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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.