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Finding the Fourth Proportional to 228,319.44, 315,063.72 and 127,698

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Solution

The fourth proportional to 228,319.44, 315,063.72 and 127,698 is: 176,213.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,319.44 : 315,063.72 = 127,698 : x
  2. Step 2: Convert to fraction form
    228,319.44/315,063.72 = 127,698/x
  3. Step 3: Cross multiply
    228,319.44x = 315,063.72 × 127,698
  4. Step 4: Simplify right side
    228,319.44x = 40,233,006,916.56
  5. Step 5: Solve for x
    x = 40,233,006,916.56/228,319.44
  6. Step 6: Final answer
    x = 176,213.67

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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.