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Finding the Fourth Proportional to 300,279.48, 414,535.70 and 172,930.48

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Solution

The fourth proportional to 300,279.48, 414,535.70 and 172,930.48 is: 238,730.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,279.48 : 414,535.70 = 172,930.48 : x
  2. Step 2: Convert to fraction form
    300,279.48/414,535.70 = 172,930.48/x
  3. Step 3: Cross multiply
    300,279.48x = 414,535.70 × 172,930.48
  4. Step 4: Simplify right side
    300,279.48x = 71,685,857,578.14
  5. Step 5: Solve for x
    x = 71,685,857,578.14/300,279.48
  6. Step 6: Final answer
    x = 238,730.46

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1.5x scale

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.