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Finding the Fourth Proportional to 208,775.87, 313,010.44 and 66,539.30

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Solution

The fourth proportional to 208,775.87, 313,010.44 and 66,539.30 is: 99,760.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,775.87 : 313,010.44 = 66,539.30 : x
  2. Step 2: Convert to fraction form
    208,775.87/313,010.44 = 66,539.30/x
  3. Step 3: Cross multiply
    208,775.87x = 313,010.44 × 66,539.30
  4. Step 4: Simplify right side
    208,775.87x = 20,827,493,838.89
  5. Step 5: Solve for x
    x = 20,827,493,838.89/208,775.87
  6. Step 6: Final answer
    x = 99,760.06

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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.