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Finding the Fourth Proportional to 215,879.90, 297,996.32 and 162,320.45

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Solution

The fourth proportional to 215,879.90, 297,996.32 and 162,320.45 is: 224,063.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,879.90 : 297,996.32 = 162,320.45 : x
  2. Step 2: Convert to fraction form
    215,879.90/297,996.32 = 162,320.45/x
  3. Step 3: Cross multiply
    215,879.90x = 297,996.32 × 162,320.45
  4. Step 4: Simplify right side
    215,879.90x = 48,370,895,676.56
  5. Step 5: Solve for x
    x = 48,370,895,676.56/215,879.90
  6. Step 6: Final answer
    x = 224,063.92

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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.