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Finding the Fourth Proportional to 215,764.94, 323,595.44 and 66,006.53

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Solution

The fourth proportional to 215,764.94, 323,595.44 and 66,006.53 is: 98,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,764.94 : 323,595.44 = 66,006.53 : x
  2. Step 2: Convert to fraction form
    215,764.94/323,595.44 = 66,006.53/x
  3. Step 3: Cross multiply
    215,764.94x = 323,595.44 × 66,006.53
  4. Step 4: Simplify right side
    215,764.94x = 21,359,412,118.22
  5. Step 5: Solve for x
    x = 21,359,412,118.22/215,764.94
  6. Step 6: Final answer
    x = 98,993.90

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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.