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Finding the Fourth Proportional to 268,212.96, 402,371.28 and 101,988

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Solution

The fourth proportional to 268,212.96, 402,371.28 and 101,988 is: 153,001.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,212.96 : 402,371.28 = 101,988 : x
  2. Step 2: Convert to fraction form
    268,212.96/402,371.28 = 101,988/x
  3. Step 3: Cross multiply
    268,212.96x = 402,371.28 × 101,988
  4. Step 4: Simplify right side
    268,212.96x = 41,037,042,104.64
  5. Step 5: Solve for x
    x = 41,037,042,104.64/268,212.96
  6. Step 6: Final answer
    x = 153,001.71

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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.