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Finding the Fourth Proportional to 225,402.20, 311,064.74 and 124,800.20

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Solution

The fourth proportional to 225,402.20, 311,064.74 and 124,800.20 is: 172,229.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,402.20 : 311,064.74 = 124,800.20 : x
  2. Step 2: Convert to fraction form
    225,402.20/311,064.74 = 124,800.20/x
  3. Step 3: Cross multiply
    225,402.20x = 311,064.74 × 124,800.20
  4. Step 4: Simplify right side
    225,402.20x = 38,820,939,585.62
  5. Step 5: Solve for x
    x = 38,820,939,585.62/225,402.20
  6. Step 6: Final answer
    x = 172,229.64

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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.