Home / 223,629.39-308,619.32-128,136.33

Finding the Fourth Proportional to 223,629.39, 308,619.32 and 128,136.33

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Solution

The fourth proportional to 223,629.39, 308,619.32 and 128,136.33 is: 176,834.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,629.39 : 308,619.32 = 128,136.33 : x
  2. Step 2: Convert to fraction form
    223,629.39/308,619.32 = 128,136.33/x
  3. Step 3: Cross multiply
    223,629.39x = 308,619.32 × 128,136.33
  4. Step 4: Simplify right side
    223,629.39x = 39,545,346,391.21
  5. Step 5: Solve for x
    x = 39,545,346,391.21/223,629.39
  6. Step 6: Final answer
    x = 176,834.30

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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.