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Finding the Fourth Proportional to 558,659.88, 838,326.06 and 203,704.20

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Solution

The fourth proportional to 558,659.88, 838,326.06 and 203,704.20 is: 305,678.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,659.88 : 838,326.06 = 203,704.20 : x
  2. Step 2: Convert to fraction form
    558,659.88/838,326.06 = 203,704.20/x
  3. Step 3: Cross multiply
    558,659.88x = 838,326.06 × 203,704.20
  4. Step 4: Simplify right side
    558,659.88x = 170,770,539,391.45
  5. Step 5: Solve for x
    x = 170,770,539,391.45/558,659.88
  6. Step 6: Final answer
    x = 305,678.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.