Home / 225,766.40-311,416.64-145,299.20

Finding the Fourth Proportional to 225,766.40, 311,416.64 and 145,299.20

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Solution

The fourth proportional to 225,766.40, 311,416.64 and 145,299.20 is: 200,422.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,766.40 : 311,416.64 = 145,299.20 : x
  2. Step 2: Convert to fraction form
    225,766.40/311,416.64 = 145,299.20/x
  3. Step 3: Cross multiply
    225,766.40x = 311,416.64 × 145,299.20
  4. Step 4: Simplify right side
    225,766.40x = 45,248,588,658.69
  5. Step 5: Solve for x
    x = 45,248,588,658.69/225,766.40
  6. Step 6: Final answer
    x = 200,422.16

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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.