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Finding the Fourth Proportional to 260,204.30, 390,379.90 and 73,217.42

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Solution

The fourth proportional to 260,204.30, 390,379.90 and 73,217.42 is: 109,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,204.30 : 390,379.90 = 73,217.42 : x
  2. Step 2: Convert to fraction form
    260,204.30/390,379.90 = 73,217.42/x
  3. Step 3: Cross multiply
    260,204.30x = 390,379.90 × 73,217.42
  4. Step 4: Simplify right side
    260,204.30x = 28,582,609,097.86
  5. Step 5: Solve for x
    x = 28,582,609,097.86/260,204.30
  6. Step 6: Final answer
    x = 109,846.80

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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.