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Finding the Fourth Proportional to 329,022.20, 493,763.70 and 210,980.60

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Solution

The fourth proportional to 329,022.20, 493,763.70 and 210,980.60 is: 316,618.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,022.20 : 493,763.70 = 210,980.60 : x
  2. Step 2: Convert to fraction form
    329,022.20/493,763.70 = 210,980.60/x
  3. Step 3: Cross multiply
    329,022.20x = 493,763.70 × 210,980.60
  4. Step 4: Simplify right side
    329,022.20x = 104,174,561,684.22
  5. Step 5: Solve for x
    x = 104,174,561,684.22/329,022.20
  6. Step 6: Final answer
    x = 316,618.64

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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.