Home / 225,621.18-311,323.58-139,666.62

Finding the Fourth Proportional to 225,621.18, 311,323.58 and 139,666.62

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Solution

The fourth proportional to 225,621.18, 311,323.58 and 139,666.62 is: 192,719.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,621.18 : 311,323.58 = 139,666.62 : x
  2. Step 2: Convert to fraction form
    225,621.18/311,323.58 = 139,666.62/x
  3. Step 3: Cross multiply
    225,621.18x = 311,323.58 × 139,666.62
  4. Step 4: Simplify right side
    225,621.18x = 43,481,512,144.90
  5. Step 5: Solve for x
    x = 43,481,512,144.90/225,621.18
  6. Step 6: Final answer
    x = 192,719.11

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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.