Home / 405,895.20-608,929.20-125,440.80

Finding the Fourth Proportional to 405,895.20, 608,929.20 and 125,440.80

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Solution

The fourth proportional to 405,895.20, 608,929.20 and 125,440.80 is: 188,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,895.20 : 608,929.20 = 125,440.80 : x
  2. Step 2: Convert to fraction form
    405,895.20/608,929.20 = 125,440.80/x
  3. Step 3: Cross multiply
    405,895.20x = 608,929.20 × 125,440.80
  4. Step 4: Simplify right side
    405,895.20x = 76,384,565,991.36
  5. Step 5: Solve for x
    x = 76,384,565,991.36/405,895.20
  6. Step 6: Final answer
    x = 188,187.90

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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.