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Finding the Fourth Proportional to 388,603.62, 582,902.18 and 108,120.06

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Solution

The fourth proportional to 388,603.62, 582,902.18 and 108,120.06 is: 162,179.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,603.62 : 582,902.18 = 108,120.06 : x
  2. Step 2: Convert to fraction form
    388,603.62/582,902.18 = 108,120.06/x
  3. Step 3: Cross multiply
    388,603.62x = 582,902.18 × 108,120.06
  4. Step 4: Simplify right side
    388,603.62x = 63,023,418,675.73
  5. Step 5: Solve for x
    x = 63,023,418,675.73/388,603.62
  6. Step 6: Final answer
    x = 162,179.19

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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.