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Finding the Fourth Proportional to 402,744.45, 603,717.58 and 189,129.97

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Solution

The fourth proportional to 402,744.45, 603,717.58 and 189,129.97 is: 283,507.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,744.45 : 603,717.58 = 189,129.97 : x
  2. Step 2: Convert to fraction form
    402,744.45/603,717.58 = 189,129.97/x
  3. Step 3: Cross multiply
    402,744.45x = 603,717.58 × 189,129.97
  4. Step 4: Simplify right side
    402,744.45x = 114,181,087,793.87
  5. Step 5: Solve for x
    x = 114,181,087,793.87/402,744.45
  6. Step 6: Final answer
    x = 283,507.54

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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.