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Finding the Fourth Proportional to 479,419.96, 661,636.94 and 275,542.05

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Solution

The fourth proportional to 479,419.96, 661,636.94 and 275,542.05 is: 380,269.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,419.96 : 661,636.94 = 275,542.05 : x
  2. Step 2: Convert to fraction form
    479,419.96/661,636.94 = 275,542.05/x
  3. Step 3: Cross multiply
    479,419.96x = 661,636.94 × 275,542.05
  4. Step 4: Simplify right side
    479,419.96x = 182,308,798,803.33
  5. Step 5: Solve for x
    x = 182,308,798,803.33/479,419.96
  6. Step 6: Final answer
    x = 380,269.52

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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.