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Finding the Fourth Proportional to 455,989.10, 683,983.85 and 119,028.83

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Solution

The fourth proportional to 455,989.10, 683,983.85 and 119,028.83 is: 178,543.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,989.10 : 683,983.85 = 119,028.83 : x
  2. Step 2: Convert to fraction form
    455,989.10/683,983.85 = 119,028.83/x
  3. Step 3: Cross multiply
    455,989.10x = 683,983.85 × 119,028.83
  4. Step 4: Simplify right side
    455,989.10x = 81,413,793,389.33
  5. Step 5: Solve for x
    x = 81,413,793,389.33/455,989.10
  6. Step 6: Final answer
    x = 178,543.29

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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.