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Finding the Fourth Proportional to 372,443.70, 558,665.55 and 214,979.70

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Solution

The fourth proportional to 372,443.70, 558,665.55 and 214,979.70 is: 322,469.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,443.70 : 558,665.55 = 214,979.70 : x
  2. Step 2: Convert to fraction form
    372,443.70/558,665.55 = 214,979.70/x
  3. Step 3: Cross multiply
    372,443.70x = 558,665.55 × 214,979.70
  4. Step 4: Simplify right side
    372,443.70x = 120,101,752,339.34
  5. Step 5: Solve for x
    x = 120,101,752,339.34/372,443.70
  6. Step 6: Final answer
    x = 322,469.55

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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.