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Finding the Fourth Proportional to 388,382.76, 582,581.44 and 107,907.32

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Solution

The fourth proportional to 388,382.76, 582,581.44 and 107,907.32 is: 161,863.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,382.76 : 582,581.44 = 107,907.32 : x
  2. Step 2: Convert to fraction form
    388,382.76/582,581.44 = 107,907.32/x
  3. Step 3: Cross multiply
    388,382.76x = 582,581.44 × 107,907.32
  4. Step 4: Simplify right side
    388,382.76x = 62,864,801,872.14
  5. Step 5: Solve for x
    x = 62,864,801,872.14/388,382.76
  6. Step 6: Final answer
    x = 161,863.01

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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.