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Finding the Fourth Proportional to 256,632.30, 384,941.97 and 69,638.94

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Solution

The fourth proportional to 256,632.30, 384,941.97 and 69,638.94 is: 104,456.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,632.30 : 384,941.97 = 69,638.94 : x
  2. Step 2: Convert to fraction form
    256,632.30/384,941.97 = 69,638.94/x
  3. Step 3: Cross multiply
    256,632.30x = 384,941.97 × 69,638.94
  4. Step 4: Simplify right side
    256,632.30x = 26,806,951,975.81
  5. Step 5: Solve for x
    x = 26,806,951,975.81/256,632.30
  6. Step 6: Final answer
    x = 104,456.66

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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.