Home / 225,809.46-311,621.33-123,828.45

Finding the Fourth Proportional to 225,809.46, 311,621.33 and 123,828.45

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Solution

The fourth proportional to 225,809.46, 311,621.33 and 123,828.45 is: 170,885.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,809.46 : 311,621.33 = 123,828.45 : x
  2. Step 2: Convert to fraction form
    225,809.46/311,621.33 = 123,828.45/x
  3. Step 3: Cross multiply
    225,809.46x = 311,621.33 × 123,828.45
  4. Step 4: Simplify right side
    225,809.46x = 38,587,585,421.83
  5. Step 5: Solve for x
    x = 38,587,585,421.83/225,809.46
  6. Step 6: Final answer
    x = 170,885.60

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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.