Home / 437,161.20-656,020.85-212,399.10

Finding the Fourth Proportional to 437,161.20, 656,020.85 and 212,399.10

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Solution

The fourth proportional to 437,161.20, 656,020.85 and 212,399.10 is: 318,734.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,161.20 : 656,020.85 = 212,399.10 : x
  2. Step 2: Convert to fraction form
    437,161.20/656,020.85 = 212,399.10/x
  3. Step 3: Cross multiply
    437,161.20x = 656,020.85 × 212,399.10
  4. Step 4: Simplify right side
    437,161.20x = 139,338,235,372.13
  5. Step 5: Solve for x
    x = 139,338,235,372.13/437,161.20
  6. Step 6: Final answer
    x = 318,734.22

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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.