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Finding the Fourth Proportional to 455,997.42, 683,627.18 and 189,957.78

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Solution

The fourth proportional to 455,997.42, 683,627.18 and 189,957.78 is: 284,782.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,997.42 : 683,627.18 = 189,957.78 : x
  2. Step 2: Convert to fraction form
    455,997.42/683,627.18 = 189,957.78/x
  3. Step 3: Cross multiply
    455,997.42x = 683,627.18 × 189,957.78
  4. Step 4: Simplify right side
    455,997.42x = 129,860,300,510.67
  5. Step 5: Solve for x
    x = 129,860,300,510.67/455,997.42
  6. Step 6: Final answer
    x = 284,782.97

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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.