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Finding the Fourth Proportional to 328,982.20, 493,703.70 and 210,940.60

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Solution

The fourth proportional to 328,982.20, 493,703.70 and 210,940.60 is: 316,558.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,982.20 : 493,703.70 = 210,940.60 : x
  2. Step 2: Convert to fraction form
    328,982.20/493,703.70 = 210,940.60/x
  3. Step 3: Cross multiply
    328,982.20x = 493,703.70 × 210,940.60
  4. Step 4: Simplify right side
    328,982.20x = 104,142,154,700.22
  5. Step 5: Solve for x
    x = 104,142,154,700.22/328,982.20
  6. Step 6: Final answer
    x = 316,558.63

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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.