Home / 385,108.62-531,408.99-212,999.25

Finding the Fourth Proportional to 385,108.62, 531,408.99 and 212,999.25

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Solution

The fourth proportional to 385,108.62, 531,408.99 and 212,999.25 is: 293,916.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,108.62 : 531,408.99 = 212,999.25 : x
  2. Step 2: Convert to fraction form
    385,108.62/531,408.99 = 212,999.25/x
  3. Step 3: Cross multiply
    385,108.62x = 531,408.99 × 212,999.25
  4. Step 4: Simplify right side
    385,108.62x = 113,189,716,313.26
  5. Step 5: Solve for x
    x = 113,189,716,313.26/385,108.62
  6. Step 6: Final answer
    x = 293,916.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.