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Finding the Fourth Proportional to 328,687.36, 493,279.20 and 160,181.44

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Solution

The fourth proportional to 328,687.36, 493,279.20 and 160,181.44 is: 240,393.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,687.36 : 493,279.20 = 160,181.44 : x
  2. Step 2: Convert to fraction form
    328,687.36/493,279.20 = 160,181.44/x
  3. Step 3: Cross multiply
    328,687.36x = 493,279.20 × 160,181.44
  4. Step 4: Simplify right side
    328,687.36x = 79,014,172,578.05
  5. Step 5: Solve for x
    x = 79,014,172,578.05/328,687.36
  6. Step 6: Final answer
    x = 240,393.10

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1.5x scale

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.