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Finding the Fourth Proportional to 259,290.53, 389,001.41 and 72,302.03

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Solution

The fourth proportional to 259,290.53, 389,001.41 and 72,302.03 is: 108,471.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,290.53 : 389,001.41 = 72,302.03 : x
  2. Step 2: Convert to fraction form
    259,290.53/389,001.41 = 72,302.03/x
  3. Step 3: Cross multiply
    259,290.53x = 389,001.41 × 72,302.03
  4. Step 4: Simplify right side
    259,290.53x = 28,125,591,615.86
  5. Step 5: Solve for x
    x = 28,125,591,615.86/259,290.53
  6. Step 6: Final answer
    x = 108,471.34

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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.