Home / 287,640.58-431,523.15-110,147.60

Finding the Fourth Proportional to 287,640.58, 431,523.15 and 110,147.60

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Solution

The fourth proportional to 287,640.58, 431,523.15 and 110,147.60 is: 165,245.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,640.58 : 431,523.15 = 110,147.60 : x
  2. Step 2: Convert to fraction form
    287,640.58/431,523.15 = 110,147.60/x
  3. Step 3: Cross multiply
    287,640.58x = 431,523.15 × 110,147.60
  4. Step 4: Simplify right side
    287,640.58x = 47,531,237,159.32
  5. Step 5: Solve for x
    x = 47,531,237,159.32/287,640.58
  6. Step 6: Final answer
    x = 165,245.24

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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.