Home / 386,101.42-578,512.05-273,222.34

Finding the Fourth Proportional to 386,101.42, 578,512.05 and 273,222.34

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Solution

The fourth proportional to 386,101.42, 578,512.05 and 273,222.34 is: 409,380.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,101.42 : 578,512.05 = 273,222.34 : x
  2. Step 2: Convert to fraction form
    386,101.42/578,512.05 = 273,222.34/x
  3. Step 3: Cross multiply
    386,101.42x = 578,512.05 × 273,222.34
  4. Step 4: Simplify right side
    386,101.42x = 158,062,416,019.20
  5. Step 5: Solve for x
    x = 158,062,416,019.20/386,101.42
  6. Step 6: Final answer
    x = 409,380.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.