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Finding the Fourth Proportional to 455,809.90, 683,715.36 and 118,850.27

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Solution

The fourth proportional to 455,809.90, 683,715.36 and 118,850.27 is: 178,275.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,809.90 : 683,715.36 = 118,850.27 : x
  2. Step 2: Convert to fraction form
    455,809.90/683,715.36 = 118,850.27/x
  3. Step 3: Cross multiply
    455,809.90x = 683,715.36 × 118,850.27
  4. Step 4: Simplify right side
    455,809.90x = 81,259,755,139.15
  5. Step 5: Solve for x
    x = 81,259,755,139.15/455,809.90
  6. Step 6: Final answer
    x = 178,275.54

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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.