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Finding the Fourth Proportional to 219,016.64, 328,527.59 and 85,959.56

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Solution

The fourth proportional to 219,016.64, 328,527.59 and 85,959.56 is: 128,940.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,016.64 : 328,527.59 = 85,959.56 : x
  2. Step 2: Convert to fraction form
    219,016.64/328,527.59 = 85,959.56/x
  3. Step 3: Cross multiply
    219,016.64x = 328,527.59 × 85,959.56
  4. Step 4: Simplify right side
    219,016.64x = 28,240,085,011.82
  5. Step 5: Solve for x
    x = 28,240,085,011.82/219,016.64
  6. Step 6: Final answer
    x = 128,940.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.