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Finding the Fourth Proportional to 208,511.78, 312,525.72 and 95,955.69

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Solution

The fourth proportional to 208,511.78, 312,525.72 and 95,955.69 is: 143,822.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,511.78 : 312,525.72 = 95,955.69 : x
  2. Step 2: Convert to fraction form
    208,511.78/312,525.72 = 95,955.69/x
  3. Step 3: Cross multiply
    208,511.78x = 312,525.72 × 95,955.69
  4. Step 4: Simplify right side
    208,511.78x = 29,988,621,105.35
  5. Step 5: Solve for x
    x = 29,988,621,105.35/208,511.78
  6. Step 6: Final answer
    x = 143,822.19

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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.