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Finding the Fourth Proportional to 451,012.31, 621,967.52 and 269,694.71

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Solution

The fourth proportional to 451,012.31, 621,967.52 and 269,694.71 is: 371,921.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,012.31 : 621,967.52 = 269,694.71 : x
  2. Step 2: Convert to fraction form
    451,012.31/621,967.52 = 269,694.71/x
  3. Step 3: Cross multiply
    451,012.31x = 621,967.52 × 269,694.71
  4. Step 4: Simplify right side
    451,012.31x = 167,741,348,587.35
  5. Step 5: Solve for x
    x = 167,741,348,587.35/451,012.31
  6. Step 6: Final answer
    x = 371,921.89

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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.