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Finding the Fourth Proportional to 415,491.39, 622,668.47 and 225,703.53

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Solution

The fourth proportional to 415,491.39, 622,668.47 and 225,703.53 is: 338,246.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,491.39 : 622,668.47 = 225,703.53 : x
  2. Step 2: Convert to fraction form
    415,491.39/622,668.47 = 225,703.53/x
  3. Step 3: Cross multiply
    415,491.39x = 622,668.47 × 225,703.53
  4. Step 4: Simplify right side
    415,491.39x = 140,538,470,570.18
  5. Step 5: Solve for x
    x = 140,538,470,570.18/415,491.39
  6. Step 6: Final answer
    x = 338,246.41

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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.