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Finding the Fourth Proportional to 321,111.70, 481,149.15 and 202,570.90

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Solution

The fourth proportional to 321,111.70, 481,149.15 and 202,570.90 is: 303,529.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,111.70 : 481,149.15 = 202,570.90 : x
  2. Step 2: Convert to fraction form
    321,111.70/481,149.15 = 202,570.90/x
  3. Step 3: Cross multiply
    321,111.70x = 481,149.15 × 202,570.90
  4. Step 4: Simplify right side
    321,111.70x = 97,466,816,349.74
  5. Step 5: Solve for x
    x = 97,466,816,349.74/321,111.70
  6. Step 6: Final answer
    x = 303,529.32

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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.