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Finding the Fourth Proportional to 207,436, 311,255.60 and 74,326.52

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Solution

The fourth proportional to 207,436, 311,255.60 and 74,326.52 is: 111,526.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,436 : 311,255.60 = 74,326.52 : x
  2. Step 2: Convert to fraction form
    207,436/311,255.60 = 74,326.52/x
  3. Step 3: Cross multiply
    207,436x = 311,255.60 × 74,326.52
  4. Step 4: Simplify right side
    207,436x = 23,134,545,578.51
  5. Step 5: Solve for x
    x = 23,134,545,578.51/207,436
  6. Step 6: Final answer
    x = 111,526.18

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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.