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Finding the Fourth Proportional to 442,717.89, 610,947.87 and 251,731.28

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Solution

The fourth proportional to 442,717.89, 610,947.87 and 251,731.28 is: 347,387.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,717.89 : 610,947.87 = 251,731.28 : x
  2. Step 2: Convert to fraction form
    442,717.89/610,947.87 = 251,731.28/x
  3. Step 3: Cross multiply
    442,717.89x = 610,947.87 × 251,731.28
  4. Step 4: Simplify right side
    442,717.89x = 153,794,686,273.63
  5. Step 5: Solve for x
    x = 153,794,686,273.63/442,717.89
  6. Step 6: Final answer
    x = 347,387.56

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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.