Home / 240,271.18-331,563.45-138,299.80

Finding the Fourth Proportional to 240,271.18, 331,563.45 and 138,299.80

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Solution

The fourth proportional to 240,271.18, 331,563.45 and 138,299.80 is: 190,847.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,271.18 : 331,563.45 = 138,299.80 : x
  2. Step 2: Convert to fraction form
    240,271.18/331,563.45 = 138,299.80/x
  3. Step 3: Cross multiply
    240,271.18x = 331,563.45 × 138,299.80
  4. Step 4: Simplify right side
    240,271.18x = 45,855,157,993.40
  5. Step 5: Solve for x
    x = 45,855,157,993.40/240,271.18
  6. Step 6: Final answer
    x = 190,847.52

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1.5x scale

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.