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Finding the Fourth Proportional to 298,990.15, 448,408.67 and 88,578.88

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Solution

The fourth proportional to 298,990.15, 448,408.67 and 88,578.88 is: 132,845.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,990.15 : 448,408.67 = 88,578.88 : x
  2. Step 2: Convert to fraction form
    298,990.15/448,408.67 = 88,578.88/x
  3. Step 3: Cross multiply
    298,990.15x = 448,408.67 × 88,578.88
  4. Step 4: Simplify right side
    298,990.15x = 39,719,537,770.89
  5. Step 5: Solve for x
    x = 39,719,537,770.89/298,990.15
  6. Step 6: Final answer
    x = 132,845.64

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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.