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Finding the Fourth Proportional to 382,395.80, 573,593.70 and 321,570.20

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Solution

The fourth proportional to 382,395.80, 573,593.70 and 321,570.20 is: 482,355.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,395.80 : 573,593.70 = 321,570.20 : x
  2. Step 2: Convert to fraction form
    382,395.80/573,593.70 = 321,570.20/x
  3. Step 3: Cross multiply
    382,395.80x = 573,593.70 × 321,570.20
  4. Step 4: Simplify right side
    382,395.80x = 184,450,640,827.74
  5. Step 5: Solve for x
    x = 184,450,640,827.74/382,395.80
  6. Step 6: Final answer
    x = 482,355.30

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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.