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Finding the Fourth Proportional to 381,809.78, 526,866.77 and 220,675.27

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Solution

The fourth proportional to 381,809.78, 526,866.77 and 220,675.27 is: 304,514.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,809.78 : 526,866.77 = 220,675.27 : x
  2. Step 2: Convert to fraction form
    381,809.78/526,866.77 = 220,675.27/x
  3. Step 3: Cross multiply
    381,809.78x = 526,866.77 × 220,675.27
  4. Step 4: Simplify right side
    381,809.78x = 116,266,465,958.30
  5. Step 5: Solve for x
    x = 116,266,465,958.30/381,809.78
  6. Step 6: Final answer
    x = 304,514.11

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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.