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Finding the Fourth Proportional to 256,130.30, 384,195.45 and 131,714.30

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Solution

The fourth proportional to 256,130.30, 384,195.45 and 131,714.30 is: 197,571.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,130.30 : 384,195.45 = 131,714.30 : x
  2. Step 2: Convert to fraction form
    256,130.30/384,195.45 = 131,714.30/x
  3. Step 3: Cross multiply
    256,130.30x = 384,195.45 × 131,714.30
  4. Step 4: Simplify right side
    256,130.30x = 50,604,034,759.94
  5. Step 5: Solve for x
    x = 50,604,034,759.94/256,130.30
  6. Step 6: Final answer
    x = 197,571.45

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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.