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Finding the Fourth Proportional to 392,043.44, 588,259.48 and 155,380.88

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Solution

The fourth proportional to 392,043.44, 588,259.48 and 155,380.88 is: 233,148.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,043.44 : 588,259.48 = 155,380.88 : x
  2. Step 2: Convert to fraction form
    392,043.44/588,259.48 = 155,380.88/x
  3. Step 3: Cross multiply
    392,043.44x = 588,259.48 × 155,380.88
  4. Step 4: Simplify right side
    392,043.44x = 91,404,275,670.74
  5. Step 5: Solve for x
    x = 91,404,275,670.74/392,043.44
  6. Step 6: Final answer
    x = 233,148.34

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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.