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Finding the Fourth Proportional to 298,701.20, 448,051.80 and 188,109.20

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Solution

The fourth proportional to 298,701.20, 448,051.80 and 188,109.20 is: 282,163.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,701.20 : 448,051.80 = 188,109.20 : x
  2. Step 2: Convert to fraction form
    298,701.20/448,051.80 = 188,109.20/x
  3. Step 3: Cross multiply
    298,701.20x = 448,051.80 × 188,109.20
  4. Step 4: Simplify right side
    298,701.20x = 84,282,665,656.56
  5. Step 5: Solve for x
    x = 84,282,665,656.56/298,701.20
  6. Step 6: Final answer
    x = 282,163.80

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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.