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Finding the Fourth Proportional to 328,959.72, 493,143.12 and 151,375.32

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Solution

The fourth proportional to 328,959.72, 493,143.12 and 151,375.32 is: 226,926.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,959.72 : 493,143.12 = 151,375.32 : x
  2. Step 2: Convert to fraction form
    328,959.72/493,143.12 = 151,375.32/x
  3. Step 3: Cross multiply
    328,959.72x = 493,143.12 × 151,375.32
  4. Step 4: Simplify right side
    328,959.72x = 74,649,697,595.80
  5. Step 5: Solve for x
    x = 74,649,697,595.80/328,959.72
  6. Step 6: Final answer
    x = 226,926.56

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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.