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Finding the Fourth Proportional to 318,707.46, 439,808.40 and 182,821.86

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Solution

The fourth proportional to 318,707.46, 439,808.40 and 182,821.86 is: 252,289.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,707.46 : 439,808.40 = 182,821.86 : x
  2. Step 2: Convert to fraction form
    318,707.46/439,808.40 = 182,821.86/x
  3. Step 3: Cross multiply
    318,707.46x = 439,808.40 × 182,821.86
  4. Step 4: Simplify right side
    318,707.46x = 80,406,589,731.62
  5. Step 5: Solve for x
    x = 80,406,589,731.62/318,707.46
  6. Step 6: Final answer
    x = 252,289.64

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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.