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Finding the Fourth Proportional to 235,115.21, 323,721.51 and 207,491.60

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Solution

The fourth proportional to 235,115.21, 323,721.51 and 207,491.60 is: 285,687.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,115.21 : 323,721.51 = 207,491.60 : x
  2. Step 2: Convert to fraction form
    235,115.21/323,721.51 = 207,491.60/x
  3. Step 3: Cross multiply
    235,115.21x = 323,721.51 × 207,491.60
  4. Step 4: Simplify right side
    235,115.21x = 67,169,494,064.32
  5. Step 5: Solve for x
    x = 67,169,494,064.32/235,115.21
  6. Step 6: Final answer
    x = 285,687.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.