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Finding the Fourth Proportional to 287,694.06, 431,525.49 and 88,014.47

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Solution

The fourth proportional to 287,694.06, 431,525.49 and 88,014.47 is: 132,016.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,694.06 : 431,525.49 = 88,014.47 : x
  2. Step 2: Convert to fraction form
    287,694.06/431,525.49 = 88,014.47/x
  3. Step 3: Cross multiply
    287,694.06x = 431,525.49 × 88,014.47
  4. Step 4: Simplify right side
    287,694.06x = 37,980,485,136.21
  5. Step 5: Solve for x
    x = 37,980,485,136.21/287,694.06
  6. Step 6: Final answer
    x = 132,016.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.