Home / 456,845.07-685,253.34-217,131.54

Finding the Fourth Proportional to 456,845.07, 685,253.34 and 217,131.54

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Solution

The fourth proportional to 456,845.07, 685,253.34 and 217,131.54 is: 325,690.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,845.07 : 685,253.34 = 217,131.54 : x
  2. Step 2: Convert to fraction form
    456,845.07/685,253.34 = 217,131.54/x
  3. Step 3: Cross multiply
    456,845.07x = 685,253.34 × 217,131.54
  4. Step 4: Simplify right side
    456,845.07x = 148,790,113,004.34
  5. Step 5: Solve for x
    x = 148,790,113,004.34/456,845.07
  6. Step 6: Final answer
    x = 325,690.53

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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.