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Finding the Fourth Proportional to 214,638.80, 322,265.40 and 121,326.80

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Solution

The fourth proportional to 214,638.80, 322,265.40 and 121,326.80 is: 182,163.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,638.80 : 322,265.40 = 121,326.80 : x
  2. Step 2: Convert to fraction form
    214,638.80/322,265.40 = 121,326.80/x
  3. Step 3: Cross multiply
    214,638.80x = 322,265.40 × 121,326.80
  4. Step 4: Simplify right side
    214,638.80x = 39,099,429,732.72
  5. Step 5: Solve for x
    x = 39,099,429,732.72/214,638.80
  6. Step 6: Final answer
    x = 182,163.85

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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.