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Finding the Fourth Proportional to 388,254.60, 582,464.70 and 219,853.80

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Solution

The fourth proportional to 388,254.60, 582,464.70 and 219,853.80 is: 329,827.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,254.60 : 582,464.70 = 219,853.80 : x
  2. Step 2: Convert to fraction form
    388,254.60/582,464.70 = 219,853.80/x
  3. Step 3: Cross multiply
    388,254.60x = 582,464.70 × 219,853.80
  4. Step 4: Simplify right side
    388,254.60x = 128,057,077,660.86
  5. Step 5: Solve for x
    x = 128,057,077,660.86/388,254.60
  6. Step 6: Final answer
    x = 329,827.59

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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.