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Finding the Fourth Proportional to 428,767.94, 591,695.73 and 235,171.71

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Solution

The fourth proportional to 428,767.94, 591,695.73 and 235,171.71 is: 324,534.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,767.94 : 591,695.73 = 235,171.71 : x
  2. Step 2: Convert to fraction form
    428,767.94/591,695.73 = 235,171.71/x
  3. Step 3: Cross multiply
    428,767.94x = 591,695.73 × 235,171.71
  4. Step 4: Simplify right side
    428,767.94x = 139,150,096,623.80
  5. Step 5: Solve for x
    x = 139,150,096,623.80/428,767.94
  6. Step 6: Final answer
    x = 324,534.75

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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.