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Finding the Fourth Proportional to 519,750.45, 779,676.75 and 216,081.90

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Solution

The fourth proportional to 519,750.45, 779,676.75 and 216,081.90 is: 324,144.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,750.45 : 779,676.75 = 216,081.90 : x
  2. Step 2: Convert to fraction form
    519,750.45/779,676.75 = 216,081.90/x
  3. Step 3: Cross multiply
    519,750.45x = 779,676.75 × 216,081.90
  4. Step 4: Simplify right side
    519,750.45x = 168,474,033,525.83
  5. Step 5: Solve for x
    x = 168,474,033,525.83/519,750.45
  6. Step 6: Final answer
    x = 324,144.08

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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.