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Finding the Fourth Proportional to 256,004.48, 353,287.20 and 142,832

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Solution

The fourth proportional to 256,004.48, 353,287.20 and 142,832 is: 197,108.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,004.48 : 353,287.20 = 142,832 : x
  2. Step 2: Convert to fraction form
    256,004.48/353,287.20 = 142,832/x
  3. Step 3: Cross multiply
    256,004.48x = 353,287.20 × 142,832
  4. Step 4: Simplify right side
    256,004.48x = 50,460,717,350.40
  5. Step 5: Solve for x
    x = 50,460,717,350.40/256,004.48
  6. Step 6: Final answer
    x = 197,108.73

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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.