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Finding the Fourth Proportional to 388,305.06, 582,723.48 and 135,585.48

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Solution

The fourth proportional to 388,305.06, 582,723.48 and 135,585.48 is: 203,471.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,305.06 : 582,723.48 = 135,585.48 : x
  2. Step 2: Convert to fraction form
    388,305.06/582,723.48 = 135,585.48/x
  3. Step 3: Cross multiply
    388,305.06x = 582,723.48 × 135,585.48
  4. Step 4: Simplify right side
    388,305.06x = 79,008,842,743.07
  5. Step 5: Solve for x
    x = 79,008,842,743.07/388,305.06
  6. Step 6: Final answer
    x = 203,471.06

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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.