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Finding the Fourth Proportional to 455,935.60, 684,292.20 and 203,604.40

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Solution

The fourth proportional to 455,935.60, 684,292.20 and 203,604.40 is: 305,580.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,935.60 : 684,292.20 = 203,604.40 : x
  2. Step 2: Convert to fraction form
    455,935.60/684,292.20 = 203,604.40/x
  3. Step 3: Cross multiply
    455,935.60x = 684,292.20 × 203,604.40
  4. Step 4: Simplify right side
    455,935.60x = 139,324,902,805.68
  5. Step 5: Solve for x
    x = 139,324,902,805.68/455,935.60
  6. Step 6: Final answer
    x = 305,580.22

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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.