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Finding the Fourth Proportional to 215,893.15, 323,701.13 and 89,620.55

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Solution

The fourth proportional to 215,893.15, 323,701.13 and 89,620.55 is: 134,373.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,893.15 : 323,701.13 = 89,620.55 : x
  2. Step 2: Convert to fraction form
    215,893.15/323,701.13 = 89,620.55/x
  3. Step 3: Cross multiply
    215,893.15x = 323,701.13 × 89,620.55
  4. Step 4: Simplify right side
    215,893.15x = 29,010,272,496.97
  5. Step 5: Solve for x
    x = 29,010,272,496.97/215,893.15
  6. Step 6: Final answer
    x = 134,373.29

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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.