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Finding the Fourth Proportional to 207,220.25, 310,830.37 and 74,092.43

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Solution

The fourth proportional to 207,220.25, 310,830.37 and 74,092.43 is: 111,138.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,220.25 : 310,830.37 = 74,092.43 : x
  2. Step 2: Convert to fraction form
    207,220.25/310,830.37 = 74,092.43/x
  3. Step 3: Cross multiply
    207,220.25x = 310,830.37 × 74,092.43
  4. Step 4: Simplify right side
    207,220.25x = 23,030,178,300.79
  5. Step 5: Solve for x
    x = 23,030,178,300.79/207,220.25
  6. Step 6: Final answer
    x = 111,138.65

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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.