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Finding the Fourth Proportional to 317,692.08, 438,494.40 and 196,760.88

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Solution

The fourth proportional to 317,692.08, 438,494.40 and 196,760.88 is: 271,579.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,692.08 : 438,494.40 = 196,760.88 : x
  2. Step 2: Convert to fraction form
    317,692.08/438,494.40 = 196,760.88/x
  3. Step 3: Cross multiply
    317,692.08x = 438,494.40 × 196,760.88
  4. Step 4: Simplify right side
    317,692.08x = 86,278,544,019.07
  5. Step 5: Solve for x
    x = 86,278,544,019.07/317,692.08
  6. Step 6: Final answer
    x = 271,579.15

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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.