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Finding the Fourth Proportional to 289,563.48, 434,496.67 and 210,256.56

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Solution

The fourth proportional to 289,563.48, 434,496.67 and 210,256.56 is: 315,494.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,563.48 : 434,496.67 = 210,256.56 : x
  2. Step 2: Convert to fraction form
    289,563.48/434,496.67 = 210,256.56/x
  3. Step 3: Cross multiply
    289,563.48x = 434,496.67 × 210,256.56
  4. Step 4: Simplify right side
    289,563.48x = 91,355,772,993.17
  5. Step 5: Solve for x
    x = 91,355,772,993.17/289,563.48
  6. Step 6: Final answer
    x = 315,494.81

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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.