Home / 256,158.12-384,237.18-131,419.56

Finding the Fourth Proportional to 256,158.12, 384,237.18 and 131,419.56

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Solution

The fourth proportional to 256,158.12, 384,237.18 and 131,419.56 is: 197,129.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,158.12 : 384,237.18 = 131,419.56 : x
  2. Step 2: Convert to fraction form
    256,158.12/384,237.18 = 131,419.56/x
  3. Step 3: Cross multiply
    256,158.12x = 384,237.18 × 131,419.56
  4. Step 4: Simplify right side
    256,158.12x = 50,496,281,131.24
  5. Step 5: Solve for x
    x = 50,496,281,131.24/256,158.12
  6. Step 6: Final answer
    x = 197,129.34

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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.