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Finding the Fourth Proportional to 315,477.48, 435,408.92 and 200,636.39

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Solution

The fourth proportional to 315,477.48, 435,408.92 and 200,636.39 is: 276,910.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,477.48 : 435,408.92 = 200,636.39 : x
  2. Step 2: Convert to fraction form
    315,477.48/435,408.92 = 200,636.39/x
  3. Step 3: Cross multiply
    315,477.48x = 435,408.92 × 200,636.39
  4. Step 4: Simplify right side
    315,477.48x = 87,358,870,702.37
  5. Step 5: Solve for x
    x = 87,358,870,702.37/315,477.48
  6. Step 6: Final answer
    x = 276,910.01

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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.