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Finding the Fourth Proportional to 455,791.31, 683,720.20 and 156,269.35

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Solution

The fourth proportional to 455,791.31, 683,720.20 and 156,269.35 is: 234,415.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,791.31 : 683,720.20 = 156,269.35 : x
  2. Step 2: Convert to fraction form
    455,791.31/683,720.20 = 156,269.35/x
  3. Step 3: Cross multiply
    455,791.31x = 683,720.20 × 156,269.35
  4. Step 4: Simplify right side
    455,791.31x = 106,844,507,817.27
  5. Step 5: Solve for x
    x = 106,844,507,817.27/455,791.31
  6. Step 6: Final answer
    x = 234,415.41

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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.