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Finding the Fourth Proportional to 428,684.97, 591,530.88 and 235,041.72

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Solution

The fourth proportional to 428,684.97, 591,530.88 and 235,041.72 is: 324,327.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,684.97 : 591,530.88 = 235,041.72 : x
  2. Step 2: Convert to fraction form
    428,684.97/591,530.88 = 235,041.72/x
  3. Step 3: Cross multiply
    428,684.97x = 591,530.88 × 235,041.72
  4. Step 4: Simplify right side
    428,684.97x = 139,034,435,468.31
  5. Step 5: Solve for x
    x = 139,034,435,468.31/428,684.97
  6. Step 6: Final answer
    x = 324,327.76

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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.