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Finding the Fourth Proportional to 490,178.70, 734,721.30 and 190,559.70

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Solution

The fourth proportional to 490,178.70, 734,721.30 and 190,559.70 is: 285,627.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,178.70 : 734,721.30 = 190,559.70 : x
  2. Step 2: Convert to fraction form
    490,178.70/734,721.30 = 190,559.70/x
  3. Step 3: Cross multiply
    490,178.70x = 734,721.30 × 190,559.70
  4. Step 4: Simplify right side
    490,178.70x = 140,008,270,511.61
  5. Step 5: Solve for x
    x = 140,008,270,511.61/490,178.70
  6. Step 6: Final answer
    x = 285,627.00

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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.