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Finding the Fourth Proportional to 479,357.58, 661,553.15 and 275,448.12

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Solution

The fourth proportional to 479,357.58, 661,553.15 and 275,448.12 is: 380,141.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,357.58 : 661,553.15 = 275,448.12 : x
  2. Step 2: Convert to fraction form
    479,357.58/661,553.15 = 275,448.12/x
  3. Step 3: Cross multiply
    479,357.58x = 661,553.15 × 275,448.12
  4. Step 4: Simplify right side
    479,357.58x = 182,223,571,447.58
  5. Step 5: Solve for x
    x = 182,223,571,447.58/479,357.58
  6. Step 6: Final answer
    x = 380,141.21

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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.