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Finding the Fourth Proportional to 318,680, 439,799.40 and 184,544

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Solution

The fourth proportional to 318,680, 439,799.40 and 184,544 is: 254,682.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,680 : 439,799.40 = 184,544 : x
  2. Step 2: Convert to fraction form
    318,680/439,799.40 = 184,544/x
  3. Step 3: Cross multiply
    318,680x = 439,799.40 × 184,544
  4. Step 4: Simplify right side
    318,680x = 81,162,340,473.60
  5. Step 5: Solve for x
    x = 81,162,340,473.60/318,680
  6. Step 6: Final answer
    x = 254,682.88

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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.