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Finding the Fourth Proportional to 455,818.41, 683,728.11 and 118,858.77

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Solution

The fourth proportional to 455,818.41, 683,728.11 and 118,858.77 is: 178,288.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,818.41 : 683,728.11 = 118,858.77 : x
  2. Step 2: Convert to fraction form
    455,818.41/683,728.11 = 118,858.77/x
  3. Step 3: Cross multiply
    455,818.41x = 683,728.11 × 118,858.77
  4. Step 4: Simplify right side
    455,818.41x = 81,267,082,169.02
  5. Step 5: Solve for x
    x = 81,267,082,169.02/455,818.41
  6. Step 6: Final answer
    x = 178,288.28

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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.