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Finding the Fourth Proportional to 312,991.00, 431,928.11 and 169,751.16

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Solution

The fourth proportional to 312,991.00, 431,928.11 and 169,751.16 is: 234,256.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,991.00 : 431,928.11 = 169,751.16 : x
  2. Step 2: Convert to fraction form
    312,991.00/431,928.11 = 169,751.16/x
  3. Step 3: Cross multiply
    312,991.00x = 431,928.11 × 169,751.16
  4. Step 4: Simplify right side
    312,991.00x = 73,320,298,133.49
  5. Step 5: Solve for x
    x = 73,320,298,133.49/312,991.00
  6. Step 6: Final answer
    x = 234,256.89

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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.