Home / 240,148.28-331,395.38-138,206.49

Finding the Fourth Proportional to 240,148.28, 331,395.38 and 138,206.49

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Solution

The fourth proportional to 240,148.28, 331,395.38 and 138,206.49 is: 190,719.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,148.28 : 331,395.38 = 138,206.49 : x
  2. Step 2: Convert to fraction form
    240,148.28/331,395.38 = 138,206.49/x
  3. Step 3: Cross multiply
    240,148.28x = 331,395.38 × 138,206.49
  4. Step 4: Simplify right side
    240,148.28x = 45,800,991,374.80
  5. Step 5: Solve for x
    x = 45,800,991,374.80/240,148.28
  6. Step 6: Final answer
    x = 190,719.63

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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.