Home / 305,538.90-421,648.23-169,581.61

Finding the Fourth Proportional to 305,538.90, 421,648.23 and 169,581.61

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Solution

The fourth proportional to 305,538.90, 421,648.23 and 169,581.61 is: 234,025.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,538.90 : 421,648.23 = 169,581.61 : x
  2. Step 2: Convert to fraction form
    305,538.90/421,648.23 = 169,581.61/x
  3. Step 3: Cross multiply
    305,538.90x = 421,648.23 × 169,581.61
  4. Step 4: Simplify right side
    305,538.90x = 71,503,785,697.05
  5. Step 5: Solve for x
    x = 71,503,785,697.05/305,538.90
  6. Step 6: Final answer
    x = 234,025.15

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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.