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Finding the Fourth Proportional to 518,662.51, 777,993.74 and 139,584.08

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Solution

The fourth proportional to 518,662.51, 777,993.74 and 139,584.08 is: 209,376.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,662.51 : 777,993.74 = 139,584.08 : x
  2. Step 2: Convert to fraction form
    518,662.51/777,993.74 = 139,584.08/x
  3. Step 3: Cross multiply
    518,662.51x = 777,993.74 × 139,584.08
  4. Step 4: Simplify right side
    518,662.51x = 108,595,536,553.69
  5. Step 5: Solve for x
    x = 108,595,536,553.69/518,662.51
  6. Step 6: Final answer
    x = 209,376.11

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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.