Home / 223,736.13-308,769.64-128,257.18

Finding the Fourth Proportional to 223,736.13, 308,769.64 and 128,257.18

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Solution

The fourth proportional to 223,736.13, 308,769.64 and 128,257.18 is: 177,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,736.13 : 308,769.64 = 128,257.18 : x
  2. Step 2: Convert to fraction form
    223,736.13/308,769.64 = 128,257.18/x
  3. Step 3: Cross multiply
    223,736.13x = 308,769.64 × 128,257.18
  4. Step 4: Simplify right side
    223,736.13x = 39,601,922,203.45
  5. Step 5: Solve for x
    x = 39,601,922,203.45/223,736.13
  6. Step 6: Final answer
    x = 177,002.80

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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.