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Finding the Fourth Proportional to 318,872, 440,043.36 and 184,813.76

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Solution

The fourth proportional to 318,872, 440,043.36 and 184,813.76 is: 255,042.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,872 : 440,043.36 = 184,813.76 : x
  2. Step 2: Convert to fraction form
    318,872/440,043.36 = 184,813.76/x
  3. Step 3: Cross multiply
    318,872x = 440,043.36 × 184,813.76
  4. Step 4: Simplify right side
    318,872x = 81,326,067,924.63
  5. Step 5: Solve for x
    x = 81,326,067,924.63/318,872
  6. Step 6: Final answer
    x = 255,042.99

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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.