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Finding the Fourth Proportional to 442,945.03, 664,514.44 and 143,455.88

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Solution

The fourth proportional to 442,945.03, 664,514.44 and 143,455.88 is: 215,215.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,945.03 : 664,514.44 = 143,455.88 : x
  2. Step 2: Convert to fraction form
    442,945.03/664,514.44 = 143,455.88/x
  3. Step 3: Cross multiply
    442,945.03x = 664,514.44 × 143,455.88
  4. Step 4: Simplify right side
    442,945.03x = 95,328,503,762.91
  5. Step 5: Solve for x
    x = 95,328,503,762.91/442,945.03
  6. Step 6: Final answer
    x = 215,215.20

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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.