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Finding the Fourth Proportional to 326,158.98, 450,148.59 and 198,908.39

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Solution

The fourth proportional to 326,158.98, 450,148.59 and 198,908.39 is: 274,523.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,158.98 : 450,148.59 = 198,908.39 : x
  2. Step 2: Convert to fraction form
    326,158.98/450,148.59 = 198,908.39/x
  3. Step 3: Cross multiply
    326,158.98x = 450,148.59 × 198,908.39
  4. Step 4: Simplify right side
    326,158.98x = 89,538,331,297.67
  5. Step 5: Solve for x
    x = 89,538,331,297.67/326,158.98
  6. Step 6: Final answer
    x = 274,523.58

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1.5x scale

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.