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Finding the Fourth Proportional to 256,090.60, 384,123.10 and 131,444.20

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Solution

The fourth proportional to 256,090.60, 384,123.10 and 131,444.20 is: 197,159.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,090.60 : 384,123.10 = 131,444.20 : x
  2. Step 2: Convert to fraction form
    256,090.60/384,123.10 = 131,444.20/x
  3. Step 3: Cross multiply
    256,090.60x = 384,123.10 × 131,444.20
  4. Step 4: Simplify right side
    256,090.60x = 50,490,753,581.02
  5. Step 5: Solve for x
    x = 50,490,753,581.02/256,090.60
  6. Step 6: Final answer
    x = 197,159.73

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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.