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Finding the Fourth Proportional to 256,353.60, 384,376.80 and 131,937.60

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Solution

The fourth proportional to 256,353.60, 384,376.80 and 131,937.60 is: 197,827.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,353.60 : 384,376.80 = 131,937.60 : x
  2. Step 2: Convert to fraction form
    256,353.60/384,376.80 = 131,937.60/x
  3. Step 3: Cross multiply
    256,353.60x = 384,376.80 × 131,937.60
  4. Step 4: Simplify right side
    256,353.60x = 50,713,752,487.68
  5. Step 5: Solve for x
    x = 50,713,752,487.68/256,353.60
  6. Step 6: Final answer
    x = 197,827.35

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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.