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Finding the Fourth Proportional to 321,180.80, 481,270.80 and 121,392.20

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Solution

The fourth proportional to 321,180.80, 481,270.80 and 121,392.20 is: 181,899.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,180.80 : 481,270.80 = 121,392.20 : x
  2. Step 2: Convert to fraction form
    321,180.80/481,270.80 = 121,392.20/x
  3. Step 3: Cross multiply
    321,180.80x = 481,270.80 × 121,392.20
  4. Step 4: Simplify right side
    321,180.80x = 58,422,521,207.76
  5. Step 5: Solve for x
    x = 58,422,521,207.76/321,180.80
  6. Step 6: Final answer
    x = 181,899.17

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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.