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Finding the Fourth Proportional to 260,424.45, 390,674.09 and 80,523.89

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Solution

The fourth proportional to 260,424.45, 390,674.09 and 80,523.89 is: 120,797.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,424.45 : 390,674.09 = 80,523.89 : x
  2. Step 2: Convert to fraction form
    260,424.45/390,674.09 = 80,523.89/x
  3. Step 3: Cross multiply
    260,424.45x = 390,674.09 × 80,523.89
  4. Step 4: Simplify right side
    260,424.45x = 31,458,595,093.02
  5. Step 5: Solve for x
    x = 31,458,595,093.02/260,424.45
  6. Step 6: Final answer
    x = 120,797.39

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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.