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Finding the Fourth Proportional to 281,327.52, 421,991.36 and 84,335.52

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Solution

The fourth proportional to 281,327.52, 421,991.36 and 84,335.52 is: 126,503.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,327.52 : 421,991.36 = 84,335.52 : x
  2. Step 2: Convert to fraction form
    281,327.52/421,991.36 = 84,335.52/x
  3. Step 3: Cross multiply
    281,327.52x = 421,991.36 × 84,335.52
  4. Step 4: Simplify right side
    281,327.52x = 35,588,860,781.11
  5. Step 5: Solve for x
    x = 35,588,860,781.11/281,327.52
  6. Step 6: Final answer
    x = 126,503.30

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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.