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Finding the Fourth Proportional to 388,378.76, 582,575.42 and 107,903.30

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Solution

The fourth proportional to 388,378.76, 582,575.42 and 107,903.30 is: 161,856.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,378.76 : 582,575.42 = 107,903.30 : x
  2. Step 2: Convert to fraction form
    388,378.76/582,575.42 = 107,903.30/x
  3. Step 3: Cross multiply
    388,378.76x = 582,575.42 × 107,903.30
  4. Step 4: Simplify right side
    388,378.76x = 62,861,810,316.89
  5. Step 5: Solve for x
    x = 62,861,810,316.89/388,378.76
  6. Step 6: Final answer
    x = 161,856.97

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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.