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Finding the Fourth Proportional to 287,675.77, 396,995.25 and 158,618.87

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Solution

The fourth proportional to 287,675.77, 396,995.25 and 158,618.87 is: 218,895.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,675.77 : 396,995.25 = 158,618.87 : x
  2. Step 2: Convert to fraction form
    287,675.77/396,995.25 = 158,618.87/x
  3. Step 3: Cross multiply
    287,675.77x = 396,995.25 × 158,618.87
  4. Step 4: Simplify right side
    287,675.77x = 62,970,938,527.35
  5. Step 5: Solve for x
    x = 62,970,938,527.35/287,675.77
  6. Step 6: Final answer
    x = 218,895.52

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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.