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Finding the Fourth Proportional to 305,434.63, 421,550.36 and 169,512.24

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Solution

The fourth proportional to 305,434.63, 421,550.36 and 169,512.24 is: 233,954.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,434.63 : 421,550.36 = 169,512.24 : x
  2. Step 2: Convert to fraction form
    305,434.63/421,550.36 = 169,512.24/x
  3. Step 3: Cross multiply
    305,434.63x = 421,550.36 × 169,512.24
  4. Step 4: Simplify right side
    305,434.63x = 71,457,945,796.41
  5. Step 5: Solve for x
    x = 71,457,945,796.41/305,434.63
  6. Step 6: Final answer
    x = 233,954.96

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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.