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Finding the Fourth Proportional to 490,578.55, 735,725.66 and 190,992.35

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Solution

The fourth proportional to 490,578.55, 735,725.66 and 190,992.35 is: 286,433.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,578.55 : 735,725.66 = 190,992.35 : x
  2. Step 2: Convert to fraction form
    490,578.55/735,725.66 = 190,992.35/x
  3. Step 3: Cross multiply
    490,578.55x = 735,725.66 × 190,992.35
  4. Step 4: Simplify right side
    490,578.55x = 140,517,972,758.70
  5. Step 5: Solve for x
    x = 140,517,972,758.70/490,578.55
  6. Step 6: Final answer
    x = 286,433.18

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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.