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Finding the Fourth Proportional to 330,844.50, 496,266.75 and 81,526.50

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Solution

The fourth proportional to 330,844.50, 496,266.75 and 81,526.50 is: 122,289.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,844.50 : 496,266.75 = 81,526.50 : x
  2. Step 2: Convert to fraction form
    330,844.50/496,266.75 = 81,526.50/x
  3. Step 3: Cross multiply
    330,844.50x = 496,266.75 × 81,526.50
  4. Step 4: Simplify right side
    330,844.50x = 40,458,891,193.88
  5. Step 5: Solve for x
    x = 40,458,891,193.88/330,844.50
  6. Step 6: Final answer
    x = 122,289.75

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1.5x scale

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.