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Finding the Fourth Proportional to 319,271.68, 479,046.72 and 171,354.88

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Solution

The fourth proportional to 319,271.68, 479,046.72 and 171,354.88 is: 257,107.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,271.68 : 479,046.72 = 171,354.88 : x
  2. Step 2: Convert to fraction form
    319,271.68/479,046.72 = 171,354.88/x
  3. Step 3: Cross multiply
    319,271.68x = 479,046.72 × 171,354.88
  4. Step 4: Simplify right side
    319,271.68x = 82,086,993,219.99
  5. Step 5: Solve for x
    x = 82,086,993,219.99/319,271.68
  6. Step 6: Final answer
    x = 257,107.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.