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Finding the Fourth Proportional to 384,956.92, 531,252.30 and 215,198.20

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Solution

The fourth proportional to 384,956.92, 531,252.30 and 215,198.20 is: 296,980.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,956.92 : 531,252.30 = 215,198.20 : x
  2. Step 2: Convert to fraction form
    384,956.92/531,252.30 = 215,198.20/x
  3. Step 3: Cross multiply
    384,956.92x = 531,252.30 × 215,198.20
  4. Step 4: Simplify right side
    384,956.92x = 114,324,538,705.86
  5. Step 5: Solve for x
    x = 114,324,538,705.86/384,956.92
  6. Step 6: Final answer
    x = 296,980.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.