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Finding the Fourth Proportional to 326,894.40, 490,244.40 and 127,099.80

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Solution

The fourth proportional to 326,894.40, 490,244.40 and 127,099.80 is: 190,611.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,894.40 : 490,244.40 = 127,099.80 : x
  2. Step 2: Convert to fraction form
    326,894.40/490,244.40 = 127,099.80/x
  3. Step 3: Cross multiply
    326,894.40x = 490,244.40 × 127,099.80
  4. Step 4: Simplify right side
    326,894.40x = 62,309,965,191.12
  5. Step 5: Solve for x
    x = 62,309,965,191.12/326,894.40
  6. Step 6: Final answer
    x = 190,611.91

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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.