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Finding the Fourth Proportional to 455,376.72, 683,004.60 and 135,522.84

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Solution

The fourth proportional to 455,376.72, 683,004.60 and 135,522.84 is: 203,266.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,376.72 : 683,004.60 = 135,522.84 : x
  2. Step 2: Convert to fraction form
    455,376.72/683,004.60 = 135,522.84/x
  3. Step 3: Cross multiply
    455,376.72x = 683,004.60 × 135,522.84
  4. Step 4: Simplify right side
    455,376.72x = 92,562,723,125.06
  5. Step 5: Solve for x
    x = 92,562,723,125.06/455,376.72
  6. Step 6: Final answer
    x = 203,266.26

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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.