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Finding the Fourth Proportional to 381,760.64, 526,826.80 and 211,995.36

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Solution

The fourth proportional to 381,760.64, 526,826.80 and 211,995.36 is: 292,552.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,760.64 : 526,826.80 = 211,995.36 : x
  2. Step 2: Convert to fraction form
    381,760.64/526,826.80 = 211,995.36/x
  3. Step 3: Cross multiply
    381,760.64x = 526,826.80 × 211,995.36
  4. Step 4: Simplify right side
    381,760.64x = 111,684,837,123.65
  5. Step 5: Solve for x
    x = 111,684,837,123.65/381,760.64
  6. Step 6: Final answer
    x = 292,552.00

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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.