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Finding the Fourth Proportional to 324,998.90, 487,559.41 and 147,518.39

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Solution

The fourth proportional to 324,998.90, 487,559.41 and 147,518.39 is: 221,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,998.90 : 487,559.41 = 147,518.39 : x
  2. Step 2: Convert to fraction form
    324,998.90/487,559.41 = 147,518.39/x
  3. Step 3: Cross multiply
    324,998.90x = 487,559.41 × 147,518.39
  4. Step 4: Simplify right side
    324,998.90x = 71,923,979,192.55
  5. Step 5: Solve for x
    x = 71,923,979,192.55/324,998.90
  6. Step 6: Final answer
    x = 221,305.30

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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.