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Finding the Fourth Proportional to 408,388.77, 563,493.92 and 238,590.09

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Solution

The fourth proportional to 408,388.77, 563,493.92 and 238,590.09 is: 329,206.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,388.77 : 563,493.92 = 238,590.09 : x
  2. Step 2: Convert to fraction form
    408,388.77/563,493.92 = 238,590.09/x
  3. Step 3: Cross multiply
    408,388.77x = 563,493.92 × 238,590.09
  4. Step 4: Simplify right side
    408,388.77x = 134,444,063,894.30
  5. Step 5: Solve for x
    x = 134,444,063,894.30/408,388.77
  6. Step 6: Final answer
    x = 329,206.07

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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.