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Finding the Fourth Proportional to 318,654.42, 439,748.64 and 182,710.50

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Solution

The fourth proportional to 318,654.42, 439,748.64 and 182,710.50 is: 252,143.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,654.42 : 439,748.64 = 182,710.50 : x
  2. Step 2: Convert to fraction form
    318,654.42/439,748.64 = 182,710.50/x
  3. Step 3: Cross multiply
    318,654.42x = 439,748.64 × 182,710.50
  4. Step 4: Simplify right side
    318,654.42x = 80,346,693,888.72
  5. Step 5: Solve for x
    x = 80,346,693,888.72/318,654.42
  6. Step 6: Final answer
    x = 252,143.67

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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.