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Finding the Fourth Proportional to 381,810.63, 526,835.43 and 220,680.72

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Solution

The fourth proportional to 381,810.63, 526,835.43 and 220,680.72 is: 304,502.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,810.63 : 526,835.43 = 220,680.72 : x
  2. Step 2: Convert to fraction form
    381,810.63/526,835.43 = 220,680.72/x
  3. Step 3: Cross multiply
    381,810.63x = 526,835.43 × 220,680.72
  4. Step 4: Simplify right side
    381,810.63x = 116,262,422,013.91
  5. Step 5: Solve for x
    x = 116,262,422,013.91/381,810.63
  6. Step 6: Final answer
    x = 304,502.84

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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.