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Finding the Fourth Proportional to 321,129.70, 481,694.55 and 202,416.10

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Solution

The fourth proportional to 321,129.70, 481,694.55 and 202,416.10 is: 303,624.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,129.70 : 481,694.55 = 202,416.10 : x
  2. Step 2: Convert to fraction form
    321,129.70/481,694.55 = 202,416.10/x
  3. Step 3: Cross multiply
    321,129.70x = 481,694.55 × 202,416.10
  4. Step 4: Simplify right side
    321,129.70x = 97,502,732,202.26
  5. Step 5: Solve for x
    x = 97,502,732,202.26/321,129.70
  6. Step 6: Final answer
    x = 303,624.15

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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.