Home / 305,748.18-421,924.32-169,778.58

Finding the Fourth Proportional to 305,748.18, 421,924.32 and 169,778.58

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Solution

The fourth proportional to 305,748.18, 421,924.32 and 169,778.58 is: 234,289.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,748.18 : 421,924.32 = 169,778.58 : x
  2. Step 2: Convert to fraction form
    305,748.18/421,924.32 = 169,778.58/x
  3. Step 3: Cross multiply
    305,748.18x = 421,924.32 × 169,778.58
  4. Step 4: Simplify right side
    305,748.18x = 71,633,711,917.07
  5. Step 5: Solve for x
    x = 71,633,711,917.07/305,748.18
  6. Step 6: Final answer
    x = 234,289.90

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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.