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Finding the Fourth Proportional to 428,206.49, 590,790.66 and 246,893.85

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Solution

The fourth proportional to 428,206.49, 590,790.66 and 246,893.85 is: 340,636.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,206.49 : 590,790.66 = 246,893.85 : x
  2. Step 2: Convert to fraction form
    428,206.49/590,790.66 = 246,893.85/x
  3. Step 3: Cross multiply
    428,206.49x = 590,790.66 × 246,893.85
  4. Step 4: Simplify right side
    428,206.49x = 145,862,580,591.44
  5. Step 5: Solve for x
    x = 145,862,580,591.44/428,206.49
  6. Step 6: Final answer
    x = 340,636.08

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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.