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Finding the Fourth Proportional to 405,311.80, 608,033.04 and 124,828.96

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Solution

The fourth proportional to 405,311.80, 608,033.04 and 124,828.96 is: 187,263.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,311.80 : 608,033.04 = 124,828.96 : x
  2. Step 2: Convert to fraction form
    405,311.80/608,033.04 = 124,828.96/x
  3. Step 3: Cross multiply
    405,311.80x = 608,033.04 × 124,828.96
  4. Step 4: Simplify right side
    405,311.80x = 75,900,132,028.84
  5. Step 5: Solve for x
    x = 75,900,132,028.84/405,311.80
  6. Step 6: Final answer
    x = 187,263.56

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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.