Home / 305,945.10-422,184.15-169,968.78

Finding the Fourth Proportional to 305,945.10, 422,184.15 and 169,968.78

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Solution

The fourth proportional to 305,945.10, 422,184.15 and 169,968.78 is: 234,545.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,945.10 : 422,184.15 = 169,968.78 : x
  2. Step 2: Convert to fraction form
    305,945.10/422,184.15 = 169,968.78/x
  3. Step 3: Cross multiply
    305,945.10x = 422,184.15 × 169,968.78
  4. Step 4: Simplify right side
    305,945.10x = 71,758,124,910.84
  5. Step 5: Solve for x
    x = 71,758,124,910.84/305,945.10
  6. Step 6: Final answer
    x = 234,545.76

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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.