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Finding the Fourth Proportional to 326,157.98, 450,147.21 and 198,907.39

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Solution

The fourth proportional to 326,157.98, 450,147.21 and 198,907.39 is: 274,522.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,157.98 : 450,147.21 = 198,907.39 : x
  2. Step 2: Convert to fraction form
    326,157.98/450,147.21 = 198,907.39/x
  3. Step 3: Cross multiply
    326,157.98x = 450,147.21 × 198,907.39
  4. Step 4: Simplify right side
    326,157.98x = 89,537,606,656.88
  5. Step 5: Solve for x
    x = 89,537,606,656.88/326,157.98
  6. Step 6: Final answer
    x = 274,522.20

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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.