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Finding the Fourth Proportional to 455,380.79, 683,229.74 and 202,840.61

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Solution

The fourth proportional to 455,380.79, 683,229.74 and 202,840.61 is: 304,331.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,380.79 : 683,229.74 = 202,840.61 : x
  2. Step 2: Convert to fraction form
    455,380.79/683,229.74 = 202,840.61/x
  3. Step 3: Cross multiply
    455,380.79x = 683,229.74 × 202,840.61
  4. Step 4: Simplify right side
    455,380.79x = 138,586,732,801.39
  5. Step 5: Solve for x
    x = 138,586,732,801.39/455,380.79
  6. Step 6: Final answer
    x = 304,331.53

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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.