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Finding the Fourth Proportional to 388,615.17, 582,672.39 and 163,915.50

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Solution

The fourth proportional to 388,615.17, 582,672.39 and 163,915.50 is: 245,767.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,615.17 : 582,672.39 = 163,915.50 : x
  2. Step 2: Convert to fraction form
    388,615.17/582,672.39 = 163,915.50/x
  3. Step 3: Cross multiply
    388,615.17x = 582,672.39 × 163,915.50
  4. Step 4: Simplify right side
    388,615.17x = 95,509,034,435.85
  5. Step 5: Solve for x
    x = 95,509,034,435.85/388,615.17
  6. Step 6: Final answer
    x = 245,767.64

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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.