Home / 256,520.74-353,997.75-143,343.49

Finding the Fourth Proportional to 256,520.74, 353,997.75 and 143,343.49

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Solution

The fourth proportional to 256,520.74, 353,997.75 and 143,343.49 is: 197,813.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,520.74 : 353,997.75 = 143,343.49 : x
  2. Step 2: Convert to fraction form
    256,520.74/353,997.75 = 143,343.49/x
  3. Step 3: Cross multiply
    256,520.74x = 353,997.75 × 143,343.49
  4. Step 4: Simplify right side
    256,520.74x = 50,743,272,937.15
  5. Step 5: Solve for x
    x = 50,743,272,937.15/256,520.74
  6. Step 6: Final answer
    x = 197,813.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.