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Finding the Fourth Proportional to 321,862.89, 444,539.42 and 211,972.77

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Solution

The fourth proportional to 321,862.89, 444,539.42 and 211,972.77 is: 292,765.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,862.89 : 444,539.42 = 211,972.77 : x
  2. Step 2: Convert to fraction form
    321,862.89/444,539.42 = 211,972.77/x
  3. Step 3: Cross multiply
    321,862.89x = 444,539.42 × 211,972.77
  4. Step 4: Simplify right side
    321,862.89x = 94,230,250,590.31
  5. Step 5: Solve for x
    x = 94,230,250,590.31/321,862.89
  6. Step 6: Final answer
    x = 292,765.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.