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Finding the Fourth Proportional to 408,109.68, 612,163.71 and 108,590.25

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Solution

The fourth proportional to 408,109.68, 612,163.71 and 108,590.25 is: 162,885.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,109.68 : 612,163.71 = 108,590.25 : x
  2. Step 2: Convert to fraction form
    408,109.68/612,163.71 = 108,590.25/x
  3. Step 3: Cross multiply
    408,109.68x = 612,163.71 × 108,590.25
  4. Step 4: Simplify right side
    408,109.68x = 66,475,010,309.83
  5. Step 5: Solve for x
    x = 66,475,010,309.83/408,109.68
  6. Step 6: Final answer
    x = 162,885.16

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1.5x scale

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.