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Finding the Fourth Proportional to 215,765.94, 323,596.94 and 66,007.53

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Solution

The fourth proportional to 215,765.94, 323,596.94 and 66,007.53 is: 98,995.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,765.94 : 323,596.94 = 66,007.53 : x
  2. Step 2: Convert to fraction form
    215,765.94/323,596.94 = 66,007.53/x
  3. Step 3: Cross multiply
    215,765.94x = 323,596.94 × 66,007.53
  4. Step 4: Simplify right side
    215,765.94x = 21,359,834,724.96
  5. Step 5: Solve for x
    x = 21,359,834,724.96/215,765.94
  6. Step 6: Final answer
    x = 98,995.40

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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.