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Finding the Fourth Proportional to 479,046.18, 661,053.48 and 274,953.54

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Solution

The fourth proportional to 479,046.18, 661,053.48 and 274,953.54 is: 379,418.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,046.18 : 661,053.48 = 274,953.54 : x
  2. Step 2: Convert to fraction form
    479,046.18/661,053.48 = 274,953.54/x
  3. Step 3: Cross multiply
    479,046.18x = 661,053.48 × 274,953.54
  4. Step 4: Simplify right side
    479,046.18x = 181,758,994,455.32
  5. Step 5: Solve for x
    x = 181,758,994,455.32/479,046.18
  6. Step 6: Final answer
    x = 379,418.52

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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.