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Finding the Fourth Proportional to 455,696.67, 683,555.94 and 140,156.31

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Solution

The fourth proportional to 455,696.67, 683,555.94 and 140,156.31 is: 210,237.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,696.67 : 683,555.94 = 140,156.31 : x
  2. Step 2: Convert to fraction form
    455,696.67/683,555.94 = 140,156.31/x
  3. Step 3: Cross multiply
    455,696.67x = 683,555.94 × 140,156.31
  4. Step 4: Simplify right side
    455,696.67x = 95,804,678,228.98
  5. Step 5: Solve for x
    x = 95,804,678,228.98/455,696.67
  6. Step 6: Final answer
    x = 210,237.83

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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.