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Finding the Fourth Proportional to 256,405.88, 384,675.33 and 136,364.12

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Solution

The fourth proportional to 256,405.88, 384,675.33 and 136,364.12 is: 204,581.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,405.88 : 384,675.33 = 136,364.12 : x
  2. Step 2: Convert to fraction form
    256,405.88/384,675.33 = 136,364.12/x
  3. Step 3: Cross multiply
    256,405.88x = 384,675.33 × 136,364.12
  4. Step 4: Simplify right side
    256,405.88x = 52,455,912,861.16
  5. Step 5: Solve for x
    x = 52,455,912,861.16/256,405.88
  6. Step 6: Final answer
    x = 204,581.55

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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.