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Finding the Fourth Proportional to 328,648.48, 493,027.20 and 115,361.05

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Solution

The fourth proportional to 328,648.48, 493,027.20 and 115,361.05 is: 173,060.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,648.48 : 493,027.20 = 115,361.05 : x
  2. Step 2: Convert to fraction form
    328,648.48/493,027.20 = 115,361.05/x
  3. Step 3: Cross multiply
    328,648.48x = 493,027.20 × 115,361.05
  4. Step 4: Simplify right side
    328,648.48x = 56,876,133,608.00
  5. Step 5: Solve for x
    x = 56,876,133,608.00/328,648.48
  6. Step 6: Final answer
    x = 173,060.69

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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.