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Finding the Fourth Proportional to 215,998.90, 323,998.35 and 202,866.10

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Solution

The fourth proportional to 215,998.90, 323,998.35 and 202,866.10 is: 304,299.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,998.90 : 323,998.35 = 202,866.10 : x
  2. Step 2: Convert to fraction form
    215,998.90/323,998.35 = 202,866.10/x
  3. Step 3: Cross multiply
    215,998.90x = 323,998.35 × 202,866.10
  4. Step 4: Simplify right side
    215,998.90x = 65,728,281,670.94
  5. Step 5: Solve for x
    x = 65,728,281,670.94/215,998.90
  6. Step 6: Final answer
    x = 304,299.15

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1.5x scale

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.