Home / 328,028.16-491,731.20-161,621.76

Finding the Fourth Proportional to 328,028.16, 491,731.20 and 161,621.76

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Solution

The fourth proportional to 328,028.16, 491,731.20 and 161,621.76 is: 242,279.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,028.16 : 491,731.20 = 161,621.76 : x
  2. Step 2: Convert to fraction form
    328,028.16/491,731.20 = 161,621.76/x
  3. Step 3: Cross multiply
    328,028.16x = 491,731.20 × 161,621.76
  4. Step 4: Simplify right side
    328,028.16x = 79,474,461,990.91
  5. Step 5: Solve for x
    x = 79,474,461,990.91/328,028.16
  6. Step 6: Final answer
    x = 242,279.39

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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.