Home / 287,656.09-431,184.78-161,110.80

Finding the Fourth Proportional to 287,656.09, 431,184.78 and 161,110.80

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Solution

The fourth proportional to 287,656.09, 431,184.78 and 161,110.80 is: 241,498.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,656.09 : 431,184.78 = 161,110.80 : x
  2. Step 2: Convert to fraction form
    287,656.09/431,184.78 = 161,110.80/x
  3. Step 3: Cross multiply
    287,656.09x = 431,184.78 × 161,110.80
  4. Step 4: Simplify right side
    287,656.09x = 69,468,524,853.62
  5. Step 5: Solve for x
    x = 69,468,524,853.62/287,656.09
  6. Step 6: Final answer
    x = 241,498.54

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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.