Home / 225,686.30-311,305.47-145,218.38

Finding the Fourth Proportional to 225,686.30, 311,305.47 and 145,218.38

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Solution

The fourth proportional to 225,686.30, 311,305.47 and 145,218.38 is: 200,310.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,686.30 : 311,305.47 = 145,218.38 : x
  2. Step 2: Convert to fraction form
    225,686.30/311,305.47 = 145,218.38/x
  3. Step 3: Cross multiply
    225,686.30x = 311,305.47 × 145,218.38
  4. Step 4: Simplify right side
    225,686.30x = 45,207,276,038.54
  5. Step 5: Solve for x
    x = 45,207,276,038.54/225,686.30
  6. Step 6: Final answer
    x = 200,310.24

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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.