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Finding the Fourth Proportional to 287,708.80, 431,595.60 and 88,027.60

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Solution

The fourth proportional to 287,708.80, 431,595.60 and 88,027.60 is: 132,051.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,708.80 : 431,595.60 = 88,027.60 : x
  2. Step 2: Convert to fraction form
    287,708.80/431,595.60 = 88,027.60/x
  3. Step 3: Cross multiply
    287,708.80x = 431,595.60 × 88,027.60
  4. Step 4: Simplify right side
    287,708.80x = 37,992,324,838.56
  5. Step 5: Solve for x
    x = 37,992,324,838.56/287,708.80
  6. Step 6: Final answer
    x = 132,051.31

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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.