Home / 405,621.20-608,518.20-125,166.80

Finding the Fourth Proportional to 405,621.20, 608,518.20 and 125,166.80

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Solution

The fourth proportional to 405,621.20, 608,518.20 and 125,166.80 is: 187,776.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,621.20 : 608,518.20 = 125,166.80 : x
  2. Step 2: Convert to fraction form
    405,621.20/608,518.20 = 125,166.80/x
  3. Step 3: Cross multiply
    405,621.20x = 608,518.20 × 125,166.80
  4. Step 4: Simplify right side
    405,621.20x = 76,166,275,835.76
  5. Step 5: Solve for x
    x = 76,166,275,835.76/405,621.20
  6. Step 6: Final answer
    x = 187,776.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.