Home / 256,131.10-384,241.20-106,289.20

Finding the Fourth Proportional to 256,131.10, 384,241.20 and 106,289.20

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Solution

The fourth proportional to 256,131.10, 384,241.20 and 106,289.20 is: 159,452.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,131.10 : 384,241.20 = 106,289.20 : x
  2. Step 2: Convert to fraction form
    256,131.10/384,241.20 = 106,289.20/x
  3. Step 3: Cross multiply
    256,131.10x = 384,241.20 × 106,289.20
  4. Step 4: Simplify right side
    256,131.10x = 40,840,689,755.04
  5. Step 5: Solve for x
    x = 40,840,689,755.04/256,131.10
  6. Step 6: Final answer
    x = 159,452.29

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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.