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Finding the Fourth Proportional to 321,203.70, 481,805.55 and 202,490.10

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Solution

The fourth proportional to 321,203.70, 481,805.55 and 202,490.10 is: 303,735.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,203.70 : 481,805.55 = 202,490.10 : x
  2. Step 2: Convert to fraction form
    321,203.70/481,805.55 = 202,490.10/x
  3. Step 3: Cross multiply
    321,203.70x = 481,805.55 × 202,490.10
  4. Step 4: Simplify right side
    321,203.70x = 97,560,854,000.06
  5. Step 5: Solve for x
    x = 97,560,854,000.06/321,203.70
  6. Step 6: Final answer
    x = 303,735.15

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1.5x scale

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.