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Finding the Fourth Proportional to 323,428.80, 485,143.20 and 183,460.80

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Solution

The fourth proportional to 323,428.80, 485,143.20 and 183,460.80 is: 275,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,428.80 : 485,143.20 = 183,460.80 : x
  2. Step 2: Convert to fraction form
    323,428.80/485,143.20 = 183,460.80/x
  3. Step 3: Cross multiply
    323,428.80x = 485,143.20 × 183,460.80
  4. Step 4: Simplify right side
    323,428.80x = 89,004,759,586.56
  5. Step 5: Solve for x
    x = 89,004,759,586.56/323,428.80
  6. Step 6: Final answer
    x = 275,191.20

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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.