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Finding the Fourth Proportional to 323,372.80, 485,059.20 and 310,931.20

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Solution

The fourth proportional to 323,372.80, 485,059.20 and 310,931.20 is: 466,396.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,372.80 : 485,059.20 = 310,931.20 : x
  2. Step 2: Convert to fraction form
    323,372.80/485,059.20 = 310,931.20/x
  3. Step 3: Cross multiply
    323,372.80x = 485,059.20 × 310,931.20
  4. Step 4: Simplify right side
    323,372.80x = 150,820,039,127.04
  5. Step 5: Solve for x
    x = 150,820,039,127.04/323,372.80
  6. Step 6: Final answer
    x = 466,396.80

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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.