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Finding the Fourth Proportional to 640,275.18, 960,558.57 and 219,525.54

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Solution

The fourth proportional to 640,275.18, 960,558.57 and 219,525.54 is: 329,338.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,275.18 : 960,558.57 = 219,525.54 : x
  2. Step 2: Convert to fraction form
    640,275.18/960,558.57 = 219,525.54/x
  3. Step 3: Cross multiply
    640,275.18x = 960,558.57 × 219,525.54
  4. Step 4: Simplify right side
    640,275.18x = 210,867,138,780.88
  5. Step 5: Solve for x
    x = 210,867,138,780.88/640,275.18
  6. Step 6: Final answer
    x = 329,338.30

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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.