Home / 205,625.40-308,438.10-158,911.80

Finding the Fourth Proportional to 205,625.40, 308,438.10 and 158,911.80

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Solution

The fourth proportional to 205,625.40, 308,438.10 and 158,911.80 is: 238,367.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,625.40 : 308,438.10 = 158,911.80 : x
  2. Step 2: Convert to fraction form
    205,625.40/308,438.10 = 158,911.80/x
  3. Step 3: Cross multiply
    205,625.40x = 308,438.10 × 158,911.80
  4. Step 4: Simplify right side
    205,625.40x = 49,014,453,659.58
  5. Step 5: Solve for x
    x = 49,014,453,659.58/205,625.40
  6. Step 6: Final answer
    x = 238,367.70

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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.