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Finding the Fourth Proportional to 490,147.68, 734,819.76 and 174,424.80

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Solution

The fourth proportional to 490,147.68, 734,819.76 and 174,424.80 is: 261,494.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,147.68 : 734,819.76 = 174,424.80 : x
  2. Step 2: Convert to fraction form
    490,147.68/734,819.76 = 174,424.80/x
  3. Step 3: Cross multiply
    490,147.68x = 734,819.76 × 174,424.80
  4. Step 4: Simplify right side
    490,147.68x = 128,170,789,674.05
  5. Step 5: Solve for x
    x = 128,170,789,674.05/490,147.68
  6. Step 6: Final answer
    x = 261,494.23

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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.