Home / 305,736.56-421,902.37-169,779.20

Finding the Fourth Proportional to 305,736.56, 421,902.37 and 169,779.20

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Solution

The fourth proportional to 305,736.56, 421,902.37 and 169,779.20 is: 234,287.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,736.56 : 421,902.37 = 169,779.20 : x
  2. Step 2: Convert to fraction form
    305,736.56/421,902.37 = 169,779.20/x
  3. Step 3: Cross multiply
    305,736.56x = 421,902.37 × 169,779.20
  4. Step 4: Simplify right side
    305,736.56x = 71,630,247,925.92
  5. Step 5: Solve for x
    x = 71,630,247,925.92/305,736.56
  6. Step 6: Final answer
    x = 234,287.48

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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.