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Finding the Fourth Proportional to 234,578.93, 351,814.41 and 139,835.85

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Solution

The fourth proportional to 234,578.93, 351,814.41 and 139,835.85 is: 209,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,578.93 : 351,814.41 = 139,835.85 : x
  2. Step 2: Convert to fraction form
    234,578.93/351,814.41 = 139,835.85/x
  3. Step 3: Cross multiply
    234,578.93x = 351,814.41 × 139,835.85
  4. Step 4: Simplify right side
    234,578.93x = 49,196,267,064.60
  5. Step 5: Solve for x
    x = 49,196,267,064.60/234,578.93
  6. Step 6: Final answer
    x = 209,721.60

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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.