Home / 321,739.20-482,666.40-134,769.60

Finding the Fourth Proportional to 321,739.20, 482,666.40 and 134,769.60

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Solution

The fourth proportional to 321,739.20, 482,666.40 and 134,769.60 is: 202,178.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,739.20 : 482,666.40 = 134,769.60 : x
  2. Step 2: Convert to fraction form
    321,739.20/482,666.40 = 134,769.60/x
  3. Step 3: Cross multiply
    321,739.20x = 482,666.40 × 134,769.60
  4. Step 4: Simplify right side
    321,739.20x = 65,048,757,661.44
  5. Step 5: Solve for x
    x = 65,048,757,661.44/321,739.20
  6. Step 6: Final answer
    x = 202,178.53

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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.