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Finding the Fourth Proportional to 372,662.70, 558,994.05 and 215,198.70

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Solution

The fourth proportional to 372,662.70, 558,994.05 and 215,198.70 is: 322,798.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,662.70 : 558,994.05 = 215,198.70 : x
  2. Step 2: Convert to fraction form
    372,662.70/558,994.05 = 215,198.70/x
  3. Step 3: Cross multiply
    372,662.70x = 558,994.05 × 215,198.70
  4. Step 4: Simplify right side
    372,662.70x = 120,294,792,867.74
  5. Step 5: Solve for x
    x = 120,294,792,867.74/372,662.70
  6. Step 6: Final answer
    x = 322,798.05

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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.