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Finding the Fourth Proportional to 215,801.96, 323,750.36 and 66,053.80

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Solution

The fourth proportional to 215,801.96, 323,750.36 and 66,053.80 is: 99,095.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,801.96 : 323,750.36 = 66,053.80 : x
  2. Step 2: Convert to fraction form
    215,801.96/323,750.36 = 66,053.80/x
  3. Step 3: Cross multiply
    215,801.96x = 323,750.36 × 66,053.80
  4. Step 4: Simplify right side
    215,801.96x = 21,384,939,580.35
  5. Step 5: Solve for x
    x = 21,384,939,580.35/215,801.96
  6. Step 6: Final answer
    x = 99,095.21

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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.