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Finding the Fourth Proportional to 489,898.19, 734,893.49 and 190,401.71

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Solution

The fourth proportional to 489,898.19, 734,893.49 and 190,401.71 is: 285,620.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,898.19 : 734,893.49 = 190,401.71 : x
  2. Step 2: Convert to fraction form
    489,898.19/734,893.49 = 190,401.71/x
  3. Step 3: Cross multiply
    489,898.19x = 734,893.49 × 190,401.71
  4. Step 4: Simplify right side
    489,898.19x = 139,924,973,965.41
  5. Step 5: Solve for x
    x = 139,924,973,965.41/489,898.19
  6. Step 6: Final answer
    x = 285,620.51

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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.