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Finding the Fourth Proportional to 208,950.20, 313,630.10 and 103,887.80

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Solution

The fourth proportional to 208,950.20, 313,630.10 and 103,887.80 is: 155,933.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,950.20 : 313,630.10 = 103,887.80 : x
  2. Step 2: Convert to fraction form
    208,950.20/313,630.10 = 103,887.80/x
  3. Step 3: Cross multiply
    208,950.20x = 313,630.10 × 103,887.80
  4. Step 4: Simplify right side
    208,950.20x = 32,582,341,102.78
  5. Step 5: Solve for x
    x = 32,582,341,102.78/208,950.20
  6. Step 6: Final answer
    x = 155,933.52

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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.