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Finding the Fourth Proportional to 399,587.35, 551,455.99 and 227,520.34

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Solution

The fourth proportional to 399,587.35, 551,455.99 and 227,520.34 is: 313,992.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,587.35 : 551,455.99 = 227,520.34 : x
  2. Step 2: Convert to fraction form
    399,587.35/551,455.99 = 227,520.34/x
  3. Step 3: Cross multiply
    399,587.35x = 551,455.99 × 227,520.34
  4. Step 4: Simplify right side
    399,587.35x = 125,467,452,392.40
  5. Step 5: Solve for x
    x = 125,467,452,392.40/399,587.35
  6. Step 6: Final answer
    x = 313,992.56

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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.