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Finding the Fourth Proportional to 381,508.32, 526,359.60 and 220,342.08

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Solution

The fourth proportional to 381,508.32, 526,359.60 and 220,342.08 is: 304,001.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,508.32 : 526,359.60 = 220,342.08 : x
  2. Step 2: Convert to fraction form
    381,508.32/526,359.60 = 220,342.08/x
  3. Step 3: Cross multiply
    381,508.32x = 526,359.60 × 220,342.08
  4. Step 4: Simplify right side
    381,508.32x = 115,979,169,091.97
  5. Step 5: Solve for x
    x = 115,979,169,091.97/381,508.32
  6. Step 6: Final answer
    x = 304,001.68

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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.