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Finding the Fourth Proportional to 287,844.80, 431,799.60 and 88,163.60

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Solution

The fourth proportional to 287,844.80, 431,799.60 and 88,163.60 is: 132,255.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,844.80 : 431,799.60 = 88,163.60 : x
  2. Step 2: Convert to fraction form
    287,844.80/431,799.60 = 88,163.60/x
  3. Step 3: Cross multiply
    287,844.80x = 431,799.60 × 88,163.60
  4. Step 4: Simplify right side
    287,844.80x = 38,069,007,214.56
  5. Step 5: Solve for x
    x = 38,069,007,214.56/287,844.80
  6. Step 6: Final answer
    x = 132,255.32

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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.