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Finding the Fourth Proportional to 388,415.67, 582,581.98 and 104,134.74

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Solution

The fourth proportional to 388,415.67, 582,581.98 and 104,134.74 is: 156,190.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,415.67 : 582,581.98 = 104,134.74 : x
  2. Step 2: Convert to fraction form
    388,415.67/582,581.98 = 104,134.74/x
  3. Step 3: Cross multiply
    388,415.67x = 582,581.98 × 104,134.74
  4. Step 4: Simplify right side
    388,415.67x = 60,667,023,015.99
  5. Step 5: Solve for x
    x = 60,667,023,015.99/388,415.67
  6. Step 6: Final answer
    x = 156,190.98

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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.