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Finding the Fourth Proportional to 256,014.48, 353,301 and 142,842

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Solution

The fourth proportional to 256,014.48, 353,301 and 142,842 is: 197,122.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,014.48 : 353,301 = 142,842 : x
  2. Step 2: Convert to fraction form
    256,014.48/353,301 = 142,842/x
  3. Step 3: Cross multiply
    256,014.48x = 353,301 × 142,842
  4. Step 4: Simplify right side
    256,014.48x = 50,466,221,442
  5. Step 5: Solve for x
    x = 50,466,221,442/256,014.48
  6. Step 6: Final answer
    x = 197,122.53

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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.