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Finding the Fourth Proportional to 455,661.22, 683,489.35 and 185,788.30

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Solution

The fourth proportional to 455,661.22, 683,489.35 and 185,788.30 is: 278,681.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,661.22 : 683,489.35 = 185,788.30 : x
  2. Step 2: Convert to fraction form
    455,661.22/683,489.35 = 185,788.30/x
  3. Step 3: Cross multiply
    455,661.22x = 683,489.35 × 185,788.30
  4. Step 4: Simplify right side
    455,661.22x = 126,984,324,404.61
  5. Step 5: Solve for x
    x = 126,984,324,404.61/455,661.22
  6. Step 6: Final answer
    x = 278,681.44

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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.