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Finding the Fourth Proportional to 381,060.80, 525,863.04 and 211,290.56

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Solution

The fourth proportional to 381,060.80, 525,863.04 and 211,290.56 is: 291,580.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,060.80 : 525,863.04 = 211,290.56 : x
  2. Step 2: Convert to fraction form
    381,060.80/525,863.04 = 211,290.56/x
  3. Step 3: Cross multiply
    381,060.80x = 525,863.04 × 211,290.56
  4. Step 4: Simplify right side
    381,060.80x = 111,109,896,204.90
  5. Step 5: Solve for x
    x = 111,109,896,204.90/381,060.80
  6. Step 6: Final answer
    x = 291,580.49

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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.