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Finding the Fourth Proportional to 254,906.89, 381,528.63 and 187,421.03

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Solution

The fourth proportional to 254,906.89, 381,528.63 and 187,421.03 is: 280,520.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,906.89 : 381,528.63 = 187,421.03 : x
  2. Step 2: Convert to fraction form
    254,906.89/381,528.63 = 187,421.03/x
  3. Step 3: Cross multiply
    254,906.89x = 381,528.63 × 187,421.03
  4. Step 4: Simplify right side
    254,906.89x = 71,506,488,809.09
  5. Step 5: Solve for x
    x = 71,506,488,809.09/254,906.89
  6. Step 6: Final answer
    x = 280,520.03

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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.