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Finding the Fourth Proportional to 372,989.76, 558,821.22 and 214,891.52

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Solution

The fourth proportional to 372,989.76, 558,821.22 and 214,891.52 is: 321,955.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,989.76 : 558,821.22 = 214,891.52 : x
  2. Step 2: Convert to fraction form
    372,989.76/558,821.22 = 214,891.52/x
  3. Step 3: Cross multiply
    372,989.76x = 558,821.22 × 214,891.52
  4. Step 4: Simplify right side
    372,989.76x = 120,085,941,374.05
  5. Step 5: Solve for x
    x = 120,085,941,374.05/372,989.76
  6. Step 6: Final answer
    x = 321,955.06

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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.