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Finding the Fourth Proportional to 312,553.35, 431,322.57 and 169,313.22

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Solution

The fourth proportional to 312,553.35, 431,322.57 and 169,313.22 is: 233,651.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,553.35 : 431,322.57 = 169,313.22 : x
  2. Step 2: Convert to fraction form
    312,553.35/431,322.57 = 169,313.22/x
  3. Step 3: Cross multiply
    312,553.35x = 431,322.57 × 169,313.22
  4. Step 4: Simplify right side
    312,553.35x = 73,028,613,185.38
  5. Step 5: Solve for x
    x = 73,028,613,185.38/312,553.35
  6. Step 6: Final answer
    x = 233,651.67

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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.