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Finding the Fourth Proportional to 324,187.20, 486,021.60 and 137,044.80

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Solution

The fourth proportional to 324,187.20, 486,021.60 and 137,044.80 is: 205,457.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,187.20 : 486,021.60 = 137,044.80 : x
  2. Step 2: Convert to fraction form
    324,187.20/486,021.60 = 137,044.80/x
  3. Step 3: Cross multiply
    324,187.20x = 486,021.60 × 137,044.80
  4. Step 4: Simplify right side
    324,187.20x = 66,606,732,967.68
  5. Step 5: Solve for x
    x = 66,606,732,967.68/324,187.20
  6. Step 6: Final answer
    x = 205,457.63

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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.