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Finding the Fourth Proportional to 379,190.48, 523,261.32 and 218,019.92

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Solution

The fourth proportional to 379,190.48, 523,261.32 and 218,019.92 is: 300,855.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,190.48 : 523,261.32 = 218,019.92 : x
  2. Step 2: Convert to fraction form
    379,190.48/523,261.32 = 218,019.92/x
  3. Step 3: Cross multiply
    379,190.48x = 523,261.32 × 218,019.92
  4. Step 4: Simplify right side
    379,190.48x = 114,081,391,125.49
  5. Step 5: Solve for x
    x = 114,081,391,125.49/379,190.48
  6. Step 6: Final answer
    x = 300,855.10

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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.