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Finding the Fourth Proportional to 381,821.79, 526,883.31 and 220,687.29

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Solution

The fourth proportional to 381,821.79, 526,883.31 and 220,687.29 is: 304,530.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,821.79 : 526,883.31 = 220,687.29 : x
  2. Step 2: Convert to fraction form
    381,821.79/526,883.31 = 220,687.29/x
  3. Step 3: Cross multiply
    381,821.79x = 526,883.31 × 220,687.29
  4. Step 4: Simplify right side
    381,821.79x = 116,276,449,830.13
  5. Step 5: Solve for x
    x = 116,276,449,830.13/381,821.79
  6. Step 6: Final answer
    x = 304,530.68

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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.