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Finding the Fourth Proportional to 388,073.03, 582,206.43 and 135,357.14

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Solution

The fourth proportional to 388,073.03, 582,206.43 and 135,357.14 is: 203,069.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,073.03 : 582,206.43 = 135,357.14 : x
  2. Step 2: Convert to fraction form
    388,073.03/582,206.43 = 135,357.14/x
  3. Step 3: Cross multiply
    388,073.03x = 582,206.43 × 135,357.14
  4. Step 4: Simplify right side
    388,073.03x = 78,805,799,217.52
  5. Step 5: Solve for x
    x = 78,805,799,217.52/388,073.03
  6. Step 6: Final answer
    x = 203,069.51

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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.