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Finding the Fourth Proportional to 388,284.80, 582,426.88 and 107,801.92

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Solution

The fourth proportional to 388,284.80, 582,426.88 and 107,801.92 is: 161,702.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,284.80 : 582,426.88 = 107,801.92 : x
  2. Step 2: Convert to fraction form
    388,284.80/582,426.88 = 107,801.92/x
  3. Step 3: Cross multiply
    388,284.80x = 582,426.88 × 107,801.92
  4. Step 4: Simplify right side
    388,284.80x = 62,786,735,923.61
  5. Step 5: Solve for x
    x = 62,786,735,923.61/388,284.80
  6. Step 6: Final answer
    x = 161,702.79

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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.