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Finding the Fourth Proportional to 381,795.01, 526,813.88 and 220,665.05

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Solution

The fourth proportional to 381,795.01, 526,813.88 and 220,665.05 is: 304,481.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,795.01 : 526,813.88 = 220,665.05 : x
  2. Step 2: Convert to fraction form
    381,795.01/526,813.88 = 220,665.05/x
  3. Step 3: Cross multiply
    381,795.01x = 526,813.88 × 220,665.05
  4. Step 4: Simplify right side
    381,795.01x = 116,249,411,170.89
  5. Step 5: Solve for x
    x = 116,249,411,170.89/381,795.01
  6. Step 6: Final answer
    x = 304,481.22

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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.