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Finding the Fourth Proportional to 489,956.94, 734,649.27 and 190,087.11

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Solution

The fourth proportional to 489,956.94, 734,649.27 and 190,087.11 is: 285,019.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,956.94 : 734,649.27 = 190,087.11 : x
  2. Step 2: Convert to fraction form
    489,956.94/734,649.27 = 190,087.11/x
  3. Step 3: Cross multiply
    489,956.94x = 734,649.27 × 190,087.11
  4. Step 4: Simplify right side
    489,956.94x = 139,647,356,597.91
  5. Step 5: Solve for x
    x = 139,647,356,597.91/489,956.94
  6. Step 6: Final answer
    x = 285,019.65

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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.