Home / 321,830.20-482,975.70-181,439.80

Finding the Fourth Proportional to 321,830.20, 482,975.70 and 181,439.80

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Solution

The fourth proportional to 321,830.20, 482,975.70 and 181,439.80 is: 272,289.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,830.20 : 482,975.70 = 181,439.80 : x
  2. Step 2: Convert to fraction form
    321,830.20/482,975.70 = 181,439.80/x
  3. Step 3: Cross multiply
    321,830.20x = 482,975.70 × 181,439.80
  4. Step 4: Simplify right side
    321,830.20x = 87,631,014,412.86
  5. Step 5: Solve for x
    x = 87,631,014,412.86/321,830.20
  6. Step 6: Final answer
    x = 272,289.59

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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.