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Finding the Fourth Proportional to 455,045.67, 682,276.90 and 188,989.83

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Solution

The fourth proportional to 455,045.67, 682,276.90 and 188,989.83 is: 283,363.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,045.67 : 682,276.90 = 188,989.83 : x
  2. Step 2: Convert to fraction form
    455,045.67/682,276.90 = 188,989.83/x
  3. Step 3: Cross multiply
    455,045.67x = 682,276.90 × 188,989.83
  4. Step 4: Simplify right side
    455,045.67x = 128,943,395,343.93
  5. Step 5: Solve for x
    x = 128,943,395,343.93/455,045.67
  6. Step 6: Final answer
    x = 283,363.64

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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.