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Finding the Fourth Proportional to 419,753.48, 629,753.27 and 135,487.89

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Solution

The fourth proportional to 419,753.48, 629,753.27 and 135,487.89 is: 203,271.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,753.48 : 629,753.27 = 135,487.89 : x
  2. Step 2: Convert to fraction form
    419,753.48/629,753.27 = 135,487.89/x
  3. Step 3: Cross multiply
    419,753.48x = 629,753.27 × 135,487.89
  4. Step 4: Simplify right side
    419,753.48x = 85,323,941,095.46
  5. Step 5: Solve for x
    x = 85,323,941,095.46/419,753.48
  6. Step 6: Final answer
    x = 203,271.55

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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.