Home / 225,653.24-311,543.06-145,220.55

Finding the Fourth Proportional to 225,653.24, 311,543.06 and 145,220.55

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Solution

The fourth proportional to 225,653.24, 311,543.06 and 145,220.55 is: 200,495.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,653.24 : 311,543.06 = 145,220.55 : x
  2. Step 2: Convert to fraction form
    225,653.24/311,543.06 = 145,220.55/x
  3. Step 3: Cross multiply
    225,653.24x = 311,543.06 × 145,220.55
  4. Step 4: Simplify right side
    225,653.24x = 45,242,453,444.36
  5. Step 5: Solve for x
    x = 45,242,453,444.36/225,653.24
  6. Step 6: Final answer
    x = 200,495.47

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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.