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Finding the Fourth Proportional to 388,658.25, 582,987.38 and 108,182.79

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Solution

The fourth proportional to 388,658.25, 582,987.38 and 108,182.79 is: 162,274.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,658.25 : 582,987.38 = 108,182.79 : x
  2. Step 2: Convert to fraction form
    388,658.25/582,987.38 = 108,182.79/x
  3. Step 3: Cross multiply
    388,658.25x = 582,987.38 × 108,182.79
  4. Step 4: Simplify right side
    388,658.25x = 63,069,200,762.28
  5. Step 5: Solve for x
    x = 63,069,200,762.28/388,658.25
  6. Step 6: Final answer
    x = 162,274.19

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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.