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Finding the Fourth Proportional to 215,522.91, 323,206.61 and 90,873.63

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Solution

The fourth proportional to 215,522.91, 323,206.61 and 90,873.63 is: 136,277.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,522.91 : 323,206.61 = 90,873.63 : x
  2. Step 2: Convert to fraction form
    215,522.91/323,206.61 = 90,873.63/x
  3. Step 3: Cross multiply
    215,522.91x = 323,206.61 × 90,873.63
  4. Step 4: Simplify right side
    215,522.91x = 29,370,957,436.33
  5. Step 5: Solve for x
    x = 29,370,957,436.33/215,522.91
  6. Step 6: Final answer
    x = 136,277.66

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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.