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Finding the Fourth Proportional to 217,343.91, 325,933.95 and 90,992.88

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Solution

The fourth proportional to 217,343.91, 325,933.95 and 90,992.88 is: 136,455.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,343.91 : 325,933.95 = 90,992.88 : x
  2. Step 2: Convert to fraction form
    217,343.91/325,933.95 = 90,992.88/x
  3. Step 3: Cross multiply
    217,343.91x = 325,933.95 × 90,992.88
  4. Step 4: Simplify right side
    217,343.91x = 29,657,668,800.28
  5. Step 5: Solve for x
    x = 29,657,668,800.28/217,343.91
  6. Step 6: Final answer
    x = 136,455.03

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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.