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Finding the Fourth Proportional to 322,421.40, 483,048.90 and 275,765.40

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Solution

The fourth proportional to 322,421.40, 483,048.90 and 275,765.40 is: 413,149.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,421.40 : 483,048.90 = 275,765.40 : x
  2. Step 2: Convert to fraction form
    322,421.40/483,048.90 = 275,765.40/x
  3. Step 3: Cross multiply
    322,421.40x = 483,048.90 × 275,765.40
  4. Step 4: Simplify right side
    322,421.40x = 133,208,173,128.06
  5. Step 5: Solve for x
    x = 133,208,173,128.06/322,421.40
  6. Step 6: Final answer
    x = 413,149.29

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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.