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Finding the Fourth Proportional to 245,267.72, 338,470.64 and 143,299

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Solution

The fourth proportional to 245,267.72, 338,470.64 and 143,299 is: 197,753.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,267.72 : 338,470.64 = 143,299 : x
  2. Step 2: Convert to fraction form
    245,267.72/338,470.64 = 143,299/x
  3. Step 3: Cross multiply
    245,267.72x = 338,470.64 × 143,299
  4. Step 4: Simplify right side
    245,267.72x = 48,502,504,241.36
  5. Step 5: Solve for x
    x = 48,502,504,241.36/245,267.72
  6. Step 6: Final answer
    x = 197,753.31

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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.