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Finding the Fourth Proportional to 215,380.68, 323,071.20 and 67,636.68

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Solution

The fourth proportional to 215,380.68, 323,071.20 and 67,636.68 is: 101,455.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,380.68 : 323,071.20 = 67,636.68 : x
  2. Step 2: Convert to fraction form
    215,380.68/323,071.20 = 67,636.68/x
  3. Step 3: Cross multiply
    215,380.68x = 323,071.20 × 67,636.68
  4. Step 4: Simplify right side
    215,380.68x = 21,851,463,371.62
  5. Step 5: Solve for x
    x = 21,851,463,371.62/215,380.68
  6. Step 6: Final answer
    x = 101,455.08

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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.