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Finding the Fourth Proportional to 455,796.90, 683,630.55 and 140,285.70

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Solution

The fourth proportional to 455,796.90, 683,630.55 and 140,285.70 is: 210,408.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,796.90 : 683,630.55 = 140,285.70 : x
  2. Step 2: Convert to fraction form
    455,796.90/683,630.55 = 140,285.70/x
  3. Step 3: Cross multiply
    455,796.90x = 683,630.55 × 140,285.70
  4. Step 4: Simplify right side
    455,796.90x = 95,903,590,248.14
  5. Step 5: Solve for x
    x = 95,903,590,248.14/455,796.90
  6. Step 6: Final answer
    x = 210,408.61

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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.