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Finding the Fourth Proportional to 260,638.93, 359,661.84 and 145,891.29

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Solution

The fourth proportional to 260,638.93, 359,661.84 and 145,891.29 is: 201,318.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,638.93 : 359,661.84 = 145,891.29 : x
  2. Step 2: Convert to fraction form
    260,638.93/359,661.84 = 145,891.29/x
  3. Step 3: Cross multiply
    260,638.93x = 359,661.84 × 145,891.29
  4. Step 4: Simplify right side
    260,638.93x = 52,471,530,700.53
  5. Step 5: Solve for x
    x = 52,471,530,700.53/260,638.93
  6. Step 6: Final answer
    x = 201,318.85

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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.