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Finding the Fourth Proportional to 328,992.20, 493,718.70 and 210,950.60

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Solution

The fourth proportional to 328,992.20, 493,718.70 and 210,950.60 is: 316,573.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,992.20 : 493,718.70 = 210,950.60 : x
  2. Step 2: Convert to fraction form
    328,992.20/493,718.70 = 210,950.60/x
  3. Step 3: Cross multiply
    328,992.20x = 493,718.70 × 210,950.60
  4. Step 4: Simplify right side
    328,992.20x = 104,150,255,996.22
  5. Step 5: Solve for x
    x = 104,150,255,996.22/328,992.20
  6. Step 6: Final answer
    x = 316,573.63

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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.