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Finding the Fourth Proportional to 428,866, 591,835.56 and 250,052.56

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Solution

The fourth proportional to 428,866, 591,835.56 and 250,052.56 is: 345,072.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,866 : 591,835.56 = 250,052.56 : x
  2. Step 2: Convert to fraction form
    428,866/591,835.56 = 250,052.56/x
  3. Step 3: Cross multiply
    428,866x = 591,835.56 × 250,052.56
  4. Step 4: Simplify right side
    428,866x = 147,989,996,877.03
  5. Step 5: Solve for x
    x = 147,989,996,877.03/428,866
  6. Step 6: Final answer
    x = 345,072.81

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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.