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Finding the Fourth Proportional to 428,603.32, 591,449.82 and 244,805.78

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Solution

The fourth proportional to 428,603.32, 591,449.82 and 244,805.78 is: 337,818.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,603.32 : 591,449.82 = 244,805.78 : x
  2. Step 2: Convert to fraction form
    428,603.32/591,449.82 = 244,805.78/x
  3. Step 3: Cross multiply
    428,603.32x = 591,449.82 × 244,805.78
  4. Step 4: Simplify right side
    428,603.32x = 144,790,331,749.66
  5. Step 5: Solve for x
    x = 144,790,331,749.66/428,603.32
  6. Step 6: Final answer
    x = 337,818.97

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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.