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Finding the Fourth Proportional to 543,903.96, 815,852.52 and 211,479.96

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Solution

The fourth proportional to 543,903.96, 815,852.52 and 211,479.96 is: 317,218.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,903.96 : 815,852.52 = 211,479.96 : x
  2. Step 2: Convert to fraction form
    543,903.96/815,852.52 = 211,479.96/x
  3. Step 3: Cross multiply
    543,903.96x = 815,852.52 × 211,479.96
  4. Step 4: Simplify right side
    543,903.96x = 172,536,458,295.50
  5. Step 5: Solve for x
    x = 172,536,458,295.50/543,903.96
  6. Step 6: Final answer
    x = 317,218.61

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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.