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Finding the Fourth Proportional to 225,796.28, 311,598.78 and 122,430.56

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Solution

The fourth proportional to 225,796.28, 311,598.78 and 122,430.56 is: 168,954.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,796.28 : 311,598.78 = 122,430.56 : x
  2. Step 2: Convert to fraction form
    225,796.28/311,598.78 = 122,430.56/x
  3. Step 3: Cross multiply
    225,796.28x = 311,598.78 × 122,430.56
  4. Step 4: Simplify right side
    225,796.28x = 38,149,213,130.72
  5. Step 5: Solve for x
    x = 38,149,213,130.72/225,796.28
  6. Step 6: Final answer
    x = 168,954.13

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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.