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Finding the Fourth Proportional to 379,553.62, 523,822.24 and 218,415.46

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Solution

The fourth proportional to 379,553.62, 523,822.24 and 218,415.46 is: 301,435.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,553.62 : 523,822.24 = 218,415.46 : x
  2. Step 2: Convert to fraction form
    379,553.62/523,822.24 = 218,415.46/x
  3. Step 3: Cross multiply
    379,553.62x = 523,822.24 × 218,415.46
  4. Step 4: Simplify right side
    379,553.62x = 114,410,875,507.83
  5. Step 5: Solve for x
    x = 114,410,875,507.83/379,553.62
  6. Step 6: Final answer
    x = 301,435.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.