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Finding the Fourth Proportional to 323,586.80, 485,015.70 and 155,187.80

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Solution

The fourth proportional to 323,586.80, 485,015.70 and 155,187.80 is: 232,606.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,586.80 : 485,015.70 = 155,187.80 : x
  2. Step 2: Convert to fraction form
    323,586.80/485,015.70 = 155,187.80/x
  3. Step 3: Cross multiply
    323,586.80x = 485,015.70 × 155,187.80
  4. Step 4: Simplify right side
    323,586.80x = 75,268,519,448.46
  5. Step 5: Solve for x
    x = 75,268,519,448.46/323,586.80
  6. Step 6: Final answer
    x = 232,606.89

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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.