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Finding the Fourth Proportional to 300,028.80, 413,971.20 and 172,680.96

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Solution

The fourth proportional to 300,028.80, 413,971.20 and 172,680.96 is: 238,260.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,028.80 : 413,971.20 = 172,680.96 : x
  2. Step 2: Convert to fraction form
    300,028.80/413,971.20 = 172,680.96/x
  3. Step 3: Cross multiply
    300,028.80x = 413,971.20 × 172,680.96
  4. Step 4: Simplify right side
    300,028.80x = 71,484,944,228.35
  5. Step 5: Solve for x
    x = 71,484,944,228.35/300,028.80
  6. Step 6: Final answer
    x = 238,260.27

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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.