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Finding the Fourth Proportional to 228,093.40, 342,140.10 and 139,519.90

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Solution

The fourth proportional to 228,093.40, 342,140.10 and 139,519.90 is: 209,279.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,093.40 : 342,140.10 = 139,519.90 : x
  2. Step 2: Convert to fraction form
    228,093.40/342,140.10 = 139,519.90/x
  3. Step 3: Cross multiply
    228,093.40x = 342,140.10 × 139,519.90
  4. Step 4: Simplify right side
    228,093.40x = 47,735,352,537.99
  5. Step 5: Solve for x
    x = 47,735,352,537.99/228,093.40
  6. Step 6: Final answer
    x = 209,279.85

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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.