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Finding the Fourth Proportional to 428,592.15, 591,562.79 and 254,310.12

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Solution

The fourth proportional to 428,592.15, 591,562.79 and 254,310.12 is: 351,010.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,592.15 : 591,562.79 = 254,310.12 : x
  2. Step 2: Convert to fraction form
    428,592.15/591,562.79 = 254,310.12/x
  3. Step 3: Cross multiply
    428,592.15x = 591,562.79 × 254,310.12
  4. Step 4: Simplify right side
    428,592.15x = 150,440,402,840.88
  5. Step 5: Solve for x
    x = 150,440,402,840.88/428,592.15
  6. Step 6: Final answer
    x = 351,010.64

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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.