Home / 305,911.07-422,196.20-185,053.22

Finding the Fourth Proportional to 305,911.07, 422,196.20 and 185,053.22

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Solution

The fourth proportional to 305,911.07, 422,196.20 and 185,053.22 is: 255,396.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,911.07 : 422,196.20 = 185,053.22 : x
  2. Step 2: Convert to fraction form
    305,911.07/422,196.20 = 185,053.22/x
  3. Step 3: Cross multiply
    305,911.07x = 422,196.20 × 185,053.22
  4. Step 4: Simplify right side
    305,911.07x = 78,128,766,281.76
  5. Step 5: Solve for x
    x = 78,128,766,281.76/305,911.07
  6. Step 6: Final answer
    x = 255,396.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.