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Finding the Fourth Proportional to 300,722.92, 415,011.28 and 171,696.30

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Solution

The fourth proportional to 300,722.92, 415,011.28 and 171,696.30 is: 236,948.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,722.92 : 415,011.28 = 171,696.30 : x
  2. Step 2: Convert to fraction form
    300,722.92/415,011.28 = 171,696.30/x
  3. Step 3: Cross multiply
    300,722.92x = 415,011.28 × 171,696.30
  4. Step 4: Simplify right side
    300,722.92x = 71,255,901,234.26
  5. Step 5: Solve for x
    x = 71,255,901,234.26/300,722.92
  6. Step 6: Final answer
    x = 236,948.69

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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.