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Finding the Fourth Proportional to 414,605.01, 621,911 and 115,108.95

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Solution

The fourth proportional to 414,605.01, 621,911 and 115,108.95 is: 172,664.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,605.01 : 621,911 = 115,108.95 : x
  2. Step 2: Convert to fraction form
    414,605.01/621,911 = 115,108.95/x
  3. Step 3: Cross multiply
    414,605.01x = 621,911 × 115,108.95
  4. Step 4: Simplify right side
    414,605.01x = 71,587,522,203.45
  5. Step 5: Solve for x
    x = 71,587,522,203.45/414,605.01
  6. Step 6: Final answer
    x = 172,664.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.