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Finding the Fourth Proportional to 428,550.40, 591,396.24 and 234,955.79

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Solution

The fourth proportional to 428,550.40, 591,396.24 and 234,955.79 is: 324,237.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,550.40 : 591,396.24 = 234,955.79 : x
  2. Step 2: Convert to fraction form
    428,550.40/591,396.24 = 234,955.79/x
  3. Step 3: Cross multiply
    428,550.40x = 591,396.24 × 234,955.79
  4. Step 4: Simplify right side
    428,550.40x = 138,951,969,592.44
  5. Step 5: Solve for x
    x = 138,951,969,592.44/428,550.40
  6. Step 6: Final answer
    x = 324,237.17

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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.