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Finding the Fourth Proportional to 535,912.62, 803,257.38 and 215,859.53

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Solution

The fourth proportional to 535,912.62, 803,257.38 and 215,859.53 is: 323,542.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,912.62 : 803,257.38 = 215,859.53 : x
  2. Step 2: Convert to fraction form
    535,912.62/803,257.38 = 215,859.53/x
  3. Step 3: Cross multiply
    535,912.62x = 803,257.38 × 215,859.53
  4. Step 4: Simplify right side
    535,912.62x = 173,390,756,499.55
  5. Step 5: Solve for x
    x = 173,390,756,499.55/535,912.62
  6. Step 6: Final answer
    x = 323,542.96

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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.