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Finding the Fourth Proportional to 287,597.73, 396,867.43 and 158,530.56

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Solution

The fourth proportional to 287,597.73, 396,867.43 and 158,530.56 is: 218,762.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,597.73 : 396,867.43 = 158,530.56 : x
  2. Step 2: Convert to fraction form
    287,597.73/396,867.43 = 158,530.56/x
  3. Step 3: Cross multiply
    287,597.73x = 396,867.43 × 158,530.56
  4. Step 4: Simplify right side
    287,597.73x = 62,915,615,923.66
  5. Step 5: Solve for x
    x = 62,915,615,923.66/287,597.73
  6. Step 6: Final answer
    x = 218,762.56

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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.