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Finding the Fourth Proportional to 256,501.08, 384,751.72 and 66,960.92

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Solution

The fourth proportional to 256,501.08, 384,751.72 and 66,960.92 is: 100,441.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,501.08 : 384,751.72 = 66,960.92 : x
  2. Step 2: Convert to fraction form
    256,501.08/384,751.72 = 66,960.92/x
  3. Step 3: Cross multiply
    256,501.08x = 384,751.72 × 66,960.92
  4. Step 4: Simplify right side
    256,501.08x = 25,763,329,142.78
  5. Step 5: Solve for x
    x = 25,763,329,142.78/256,501.08
  6. Step 6: Final answer
    x = 100,441.41

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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.