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Finding the Fourth Proportional to 428,892, 591,871.44 and 250,078.56

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Solution

The fourth proportional to 428,892, 591,871.44 and 250,078.56 is: 345,108.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,892 : 591,871.44 = 250,078.56 : x
  2. Step 2: Convert to fraction form
    428,892/591,871.44 = 250,078.56/x
  3. Step 3: Cross multiply
    428,892x = 591,871.44 × 250,078.56
  4. Step 4: Simplify right side
    428,892x = 148,014,357,420.33
  5. Step 5: Solve for x
    x = 148,014,357,420.33/428,892
  6. Step 6: Final answer
    x = 345,108.69

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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.