Home / 287,788.88-431,579.64-121,589.84

Finding the Fourth Proportional to 287,788.88, 431,579.64 and 121,589.84

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Solution

The fourth proportional to 287,788.88, 431,579.64 and 121,589.84 is: 182,340.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,788.88 : 431,579.64 = 121,589.84 : x
  2. Step 2: Convert to fraction form
    287,788.88/431,579.64 = 121,589.84/x
  3. Step 3: Cross multiply
    287,788.88x = 431,579.64 × 121,589.84
  4. Step 4: Simplify right side
    287,788.88x = 52,475,699,374.86
  5. Step 5: Solve for x
    x = 52,475,699,374.86/287,788.88
  6. Step 6: Final answer
    x = 182,340.96

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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.