Home / 421,057.20-580,994.52-239,776.56

Finding the Fourth Proportional to 421,057.20, 580,994.52 and 239,776.56

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Solution

The fourth proportional to 421,057.20, 580,994.52 and 239,776.56 is: 330,854.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,057.20 : 580,994.52 = 239,776.56 : x
  2. Step 2: Convert to fraction form
    421,057.20/580,994.52 = 239,776.56/x
  3. Step 3: Cross multiply
    421,057.20x = 580,994.52 × 239,776.56
  4. Step 4: Simplify right side
    421,057.20x = 139,308,867,384.45
  5. Step 5: Solve for x
    x = 139,308,867,384.45/421,057.20
  6. Step 6: Final answer
    x = 330,854.97

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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.