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Finding the Fourth Proportional to 405,750.76, 608,887.26 and 218,891.24

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Solution

The fourth proportional to 405,750.76, 608,887.26 and 218,891.24 is: 328,477.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,750.76 : 608,887.26 = 218,891.24 : x
  2. Step 2: Convert to fraction form
    405,750.76/608,887.26 = 218,891.24/x
  3. Step 3: Cross multiply
    405,750.76x = 608,887.26 × 218,891.24
  4. Step 4: Simplify right side
    405,750.76x = 133,280,087,361.60
  5. Step 5: Solve for x
    x = 133,280,087,361.60/405,750.76
  6. Step 6: Final answer
    x = 328,477.73

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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.