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Finding the Fourth Proportional to 558,906.40, 838,578.30 and 203,956.30

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Solution

The fourth proportional to 558,906.40, 838,578.30 and 203,956.30 is: 306,014.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,906.40 : 838,578.30 = 203,956.30 : x
  2. Step 2: Convert to fraction form
    558,906.40/838,578.30 = 203,956.30/x
  3. Step 3: Cross multiply
    558,906.40x = 838,578.30 × 203,956.30
  4. Step 4: Simplify right side
    558,906.40x = 171,033,327,328.29
  5. Step 5: Solve for x
    x = 171,033,327,328.29/558,906.40
  6. Step 6: Final answer
    x = 306,014.26

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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.