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Finding the Fourth Proportional to 228,622.15, 315,495.15 and 126,647.29

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Solution

The fourth proportional to 228,622.15, 315,495.15 and 126,647.29 is: 174,771.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,622.15 : 315,495.15 = 126,647.29 : x
  2. Step 2: Convert to fraction form
    228,622.15/315,495.15 = 126,647.29/x
  3. Step 3: Cross multiply
    228,622.15x = 315,495.15 × 126,647.29
  4. Step 4: Simplify right side
    228,622.15x = 39,956,605,755.64
  5. Step 5: Solve for x
    x = 39,956,605,755.64/228,622.15
  6. Step 6: Final answer
    x = 174,771.37

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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.