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Finding the Fourth Proportional to 381,805.31, 526,937.81 and 220,661.69

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Solution

The fourth proportional to 381,805.31, 526,937.81 and 220,661.69 is: 304,539.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,805.31 : 526,937.81 = 220,661.69 : x
  2. Step 2: Convert to fraction form
    381,805.31/526,937.81 = 220,661.69/x
  3. Step 3: Cross multiply
    381,805.31x = 526,937.81 × 220,661.69
  4. Step 4: Simplify right side
    381,805.31x = 116,274,983,941.50
  5. Step 5: Solve for x
    x = 116,274,983,941.50/381,805.31
  6. Step 6: Final answer
    x = 304,539.98

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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.