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Finding the Fourth Proportional to 235,940.02, 325,586 and 128,509.54

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Solution

The fourth proportional to 235,940.02, 325,586 and 128,509.54 is: 177,337.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,940.02 : 325,586 = 128,509.54 : x
  2. Step 2: Convert to fraction form
    235,940.02/325,586 = 128,509.54/x
  3. Step 3: Cross multiply
    235,940.02x = 325,586 × 128,509.54
  4. Step 4: Simplify right side
    235,940.02x = 41,840,907,090.44
  5. Step 5: Solve for x
    x = 41,840,907,090.44/235,940.02
  6. Step 6: Final answer
    x = 177,337.05

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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.