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Finding the Fourth Proportional to 287,259.89, 396,418.65 and 166,424.54

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Solution

The fourth proportional to 287,259.89, 396,418.65 and 166,424.54 is: 229,665.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,259.89 : 396,418.65 = 166,424.54 : x
  2. Step 2: Convert to fraction form
    287,259.89/396,418.65 = 166,424.54/x
  3. Step 3: Cross multiply
    287,259.89x = 396,418.65 × 166,424.54
  4. Step 4: Simplify right side
    287,259.89x = 65,973,789,491.58
  5. Step 5: Solve for x
    x = 65,973,789,491.58/287,259.89
  6. Step 6: Final answer
    x = 229,665.86

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1.5x scale

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.