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Finding the Fourth Proportional to 325,573.20, 487,939.32 and 262,422.48

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Solution

The fourth proportional to 325,573.20, 487,939.32 and 262,422.48 is: 393,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,573.20 : 487,939.32 = 262,422.48 : x
  2. Step 2: Convert to fraction form
    325,573.20/487,939.32 = 262,422.48/x
  3. Step 3: Cross multiply
    325,573.20x = 487,939.32 × 262,422.48
  4. Step 4: Simplify right side
    325,573.20x = 128,046,246,443.91
  5. Step 5: Solve for x
    x = 128,046,246,443.91/325,573.20
  6. Step 6: Final answer
    x = 393,294.80

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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.