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Finding the Fourth Proportional to 207,771.90, 311,803.65 and 133,073.70

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Solution

The fourth proportional to 207,771.90, 311,803.65 and 133,073.70 is: 199,703.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,771.90 : 311,803.65 = 133,073.70 : x
  2. Step 2: Convert to fraction form
    207,771.90/311,803.65 = 133,073.70/x
  3. Step 3: Cross multiply
    207,771.90x = 311,803.65 × 133,073.70
  4. Step 4: Simplify right side
    207,771.90x = 41,492,865,379.01
  5. Step 5: Solve for x
    x = 41,492,865,379.01/207,771.90
  6. Step 6: Final answer
    x = 199,703.93

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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.