Home / 285,634.08-428,511.20-108,137.16

Finding the Fourth Proportional to 285,634.08, 428,511.20 and 108,137.16

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Solution

The fourth proportional to 285,634.08, 428,511.20 and 108,137.16 is: 162,228.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,634.08 : 428,511.20 = 108,137.16 : x
  2. Step 2: Convert to fraction form
    285,634.08/428,511.20 = 108,137.16/x
  3. Step 3: Cross multiply
    285,634.08x = 428,511.20 × 108,137.16
  4. Step 4: Simplify right side
    285,634.08x = 46,337,983,655.51
  5. Step 5: Solve for x
    x = 46,337,983,655.51/285,634.08
  6. Step 6: Final answer
    x = 162,228.48

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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.