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Finding the Fourth Proportional to 260,093.93, 390,063.13 and 135,366.89

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Solution

The fourth proportional to 260,093.93, 390,063.13 and 135,366.89 is: 203,009.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,093.93 : 390,063.13 = 135,366.89 : x
  2. Step 2: Convert to fraction form
    260,093.93/390,063.13 = 135,366.89/x
  3. Step 3: Cross multiply
    260,093.93x = 390,063.13 × 135,366.89
  4. Step 4: Simplify right side
    260,093.93x = 52,801,630,523.03
  5. Step 5: Solve for x
    x = 52,801,630,523.03/260,093.93
  6. Step 6: Final answer
    x = 203,009.86

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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.