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Finding the Fourth Proportional to 519,719.51, 779,653.11 and 159,920.21

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Solution

The fourth proportional to 519,719.51, 779,653.11 and 159,920.21 is: 239,903.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,719.51 : 779,653.11 = 159,920.21 : x
  2. Step 2: Convert to fraction form
    519,719.51/779,653.11 = 159,920.21/x
  3. Step 3: Cross multiply
    519,719.51x = 779,653.11 × 159,920.21
  4. Step 4: Simplify right side
    519,719.51x = 124,682,285,180.09
  5. Step 5: Solve for x
    x = 124,682,285,180.09/519,719.51
  6. Step 6: Final answer
    x = 239,903.03

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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.