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Finding the Fourth Proportional to 366,489.60, 505,732.32 and 215,557.44

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Solution

The fourth proportional to 366,489.60, 505,732.32 and 215,557.44 is: 297,455.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,489.60 : 505,732.32 = 215,557.44 : x
  2. Step 2: Convert to fraction form
    366,489.60/505,732.32 = 215,557.44/x
  3. Step 3: Cross multiply
    366,489.60x = 505,732.32 × 215,557.44
  4. Step 4: Simplify right side
    366,489.60x = 109,014,364,224.46
  5. Step 5: Solve for x
    x = 109,014,364,224.46/366,489.60
  6. Step 6: Final answer
    x = 297,455.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.