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Finding the Fourth Proportional to 219,668.20, 303,055.48 and 137,948.39

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Solution

The fourth proportional to 219,668.20, 303,055.48 and 137,948.39 is: 190,314.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,668.20 : 303,055.48 = 137,948.39 : x
  2. Step 2: Convert to fraction form
    219,668.20/303,055.48 = 137,948.39/x
  3. Step 3: Cross multiply
    219,668.20x = 303,055.48 × 137,948.39
  4. Step 4: Simplify right side
    219,668.20x = 41,806,015,416.68
  5. Step 5: Solve for x
    x = 41,806,015,416.68/219,668.20
  6. Step 6: Final answer
    x = 190,314.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.