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Finding the Fourth Proportional to 215,349.67, 323,071.23 and 65,586.11

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Solution

The fourth proportional to 215,349.67, 323,071.23 and 65,586.11 is: 98,393.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,349.67 : 323,071.23 = 65,586.11 : x
  2. Step 2: Convert to fraction form
    215,349.67/323,071.23 = 65,586.11/x
  3. Step 3: Cross multiply
    215,349.67x = 323,071.23 × 65,586.11
  4. Step 4: Simplify right side
    215,349.67x = 21,188,983,859.21
  5. Step 5: Solve for x
    x = 21,188,983,859.21/215,349.67
  6. Step 6: Final answer
    x = 98,393.39

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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.