Home / 312,321.38-431,003.57-169,082.60

Finding the Fourth Proportional to 312,321.38, 431,003.57 and 169,082.60

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Solution

The fourth proportional to 312,321.38, 431,003.57 and 169,082.60 is: 233,334.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,321.38 : 431,003.57 = 169,082.60 : x
  2. Step 2: Convert to fraction form
    312,321.38/431,003.57 = 169,082.60/x
  3. Step 3: Cross multiply
    312,321.38x = 431,003.57 × 169,082.60
  4. Step 4: Simplify right side
    312,321.38x = 72,875,201,224.45
  5. Step 5: Solve for x
    x = 72,875,201,224.45/312,321.38
  6. Step 6: Final answer
    x = 233,334.02

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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.