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Finding the Fourth Proportional to 381,834.60, 526,900.89 and 220,700.08

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Solution

The fourth proportional to 381,834.60, 526,900.89 and 220,700.08 is: 304,548.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,834.60 : 526,900.89 = 220,700.08 : x
  2. Step 2: Convert to fraction form
    381,834.60/526,900.89 = 220,700.08/x
  3. Step 3: Cross multiply
    381,834.60x = 526,900.89 × 220,700.08
  4. Step 4: Simplify right side
    381,834.60x = 116,287,068,575.07
  5. Step 5: Solve for x
    x = 116,287,068,575.07/381,834.60
  6. Step 6: Final answer
    x = 304,548.27

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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.