Home / 305,743.44-421,936.62-169,779.72

Finding the Fourth Proportional to 305,743.44, 421,936.62 and 169,779.72

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Solution

The fourth proportional to 305,743.44, 421,936.62 and 169,779.72 is: 234,301.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,743.44 : 421,936.62 = 169,779.72 : x
  2. Step 2: Convert to fraction form
    305,743.44/421,936.62 = 169,779.72/x
  3. Step 3: Cross multiply
    305,743.44x = 421,936.62 × 169,779.72
  4. Step 4: Simplify right side
    305,743.44x = 71,636,281,201.35
  5. Step 5: Solve for x
    x = 71,636,281,201.35/305,743.44
  6. Step 6: Final answer
    x = 234,301.94

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1.5x scale

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.