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Finding the Fourth Proportional to 298,933.83, 448,091.71 and 138,879.18

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Solution

The fourth proportional to 298,933.83, 448,091.71 and 138,879.18 is: 208,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,933.83 : 448,091.71 = 138,879.18 : x
  2. Step 2: Convert to fraction form
    298,933.83/448,091.71 = 138,879.18/x
  3. Step 3: Cross multiply
    298,933.83x = 448,091.71 × 138,879.18
  4. Step 4: Simplify right side
    298,933.83x = 62,230,609,249.60
  5. Step 5: Solve for x
    x = 62,230,609,249.60/298,933.83
  6. Step 6: Final answer
    x = 208,175.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.