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Finding the Fourth Proportional to 354,755.28, 531,670.86 and 144,147

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Solution

The fourth proportional to 354,755.28, 531,670.86 and 144,147 is: 216,032.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,755.28 : 531,670.86 = 144,147 : x
  2. Step 2: Convert to fraction form
    354,755.28/531,670.86 = 144,147/x
  3. Step 3: Cross multiply
    354,755.28x = 531,670.86 × 144,147
  4. Step 4: Simplify right side
    354,755.28x = 76,638,759,456.42
  5. Step 5: Solve for x
    x = 76,638,759,456.42/354,755.28
  6. Step 6: Final answer
    x = 216,032.75

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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.