Home / 287,786.89-431,434.16-110,421.19

Finding the Fourth Proportional to 287,786.89, 431,434.16 and 110,421.19

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Solution

The fourth proportional to 287,786.89, 431,434.16 and 110,421.19 is: 165,537.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,786.89 : 431,434.16 = 110,421.19 : x
  2. Step 2: Convert to fraction form
    287,786.89/431,434.16 = 110,421.19/x
  3. Step 3: Cross multiply
    287,786.89x = 431,434.16 × 110,421.19
  4. Step 4: Simplify right side
    287,786.89x = 47,639,471,723.16
  5. Step 5: Solve for x
    x = 47,639,471,723.16/287,786.89
  6. Step 6: Final answer
    x = 165,537.33

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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.