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Finding the Fourth Proportional to 518,623.57, 777,491.64 and 199,004.81

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Solution

The fourth proportional to 518,623.57, 777,491.64 and 199,004.81 is: 298,336.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,623.57 : 777,491.64 = 199,004.81 : x
  2. Step 2: Convert to fraction form
    518,623.57/777,491.64 = 199,004.81/x
  3. Step 3: Cross multiply
    518,623.57x = 777,491.64 × 199,004.81
  4. Step 4: Simplify right side
    518,623.57x = 154,724,575,247.30
  5. Step 5: Solve for x
    x = 154,724,575,247.30/518,623.57
  6. Step 6: Final answer
    x = 298,336.95

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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.