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Finding the Fourth Proportional to 324,786.78, 487,304.96 and 228,816.24

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Solution

The fourth proportional to 324,786.78, 487,304.96 and 228,816.24 is: 343,312.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,786.78 : 487,304.96 = 228,816.24 : x
  2. Step 2: Convert to fraction form
    324,786.78/487,304.96 = 228,816.24/x
  3. Step 3: Cross multiply
    324,786.78x = 487,304.96 × 228,816.24
  4. Step 4: Simplify right side
    324,786.78x = 111,503,287,536.47
  5. Step 5: Solve for x
    x = 111,503,287,536.47/324,786.78
  6. Step 6: Final answer
    x = 343,312.27

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1.5x scale

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.